A vivid understanding of the periodic table

"All phenomena in this world are nothing more than matter and energy. Matter can be divided into pure matter and mixtures. The properties of pure matter are fixed, including elements and compounds. Elements are all composed of the same type of atoms, such as gold nuggets and pure oxygen. Different atoms can form compounds after the gain and loss of a large amount of energy, such as water, salt, and carbon dioxide. Today, we will familiarize ourselves with the properties of various elements so that we can understand how they form compounds." Li Zhen's cards moved among our seats.
"Some teachers like to make people memorize the periodic table from the beginning. I know that your school will have a periodic table quiz later, so why don't I teach you to recognize the periodic table first?" The teacher examined the eight cards in his hand, and stared meaningfully into each student's eyes.
"First, we'll discuss these eight rows, also called groups, or families. They're like a family from top to bottom, with similar chemical properties. There are currently eighteen groups, but we'll just memorize the eight main groups for now. They're usually represented by Roman numerals followed by 'a,' like Group IA and Group IIA. Elements outside the main groups are called transition elements, represented by Roman numerals followed by 'b,' like 'IIIb,' 'VIIb,' etc. Rows are called periods, and so far, we've discovered up to the last of the seventh period." "Group 1 is lithium, sodium, potassium, rubidium, cesium, and bronze, but if we only call it the alkali gold group, it doesn't include hydrogen. In our class, lithium, sodium, potassium, rubidium, cesium, and bronze, taking the first and last two digits, is exactly 'lithium and bronze.'" Caught off guard, Li Fa smiled wryly and frowned. At the same time, Teacher Li Zhenzhen walked up to her, gave her a 1A sign, and then pouted as if to kiss Li Fa's lower body.
Li Fa naturally dodged left and right slightly, making the scene quite comical. Teacher Li Zhenzhen held her in
a stalemate for a while before finally stopping. "See that? 'If you kiss me there, then try to kiss me.' The teacher just tried to kiss Li Fa there, so 'If you kiss me there, then try to kiss me' is 'hydrogen, lithium, sodium, potassium, rubidium, cesium, cobalt,' remember that?" Oh my god, what a terrible mnemonic! Three lines immediately appeared on my face.
"Wasn't Li Fa cute just now? Lively? Group 1A and alkali metals are all very active elements." The teacher pointed to the area on her chest, roughly to the right of her right nipple, from top to bottom, the Group 1A area.
Actually, compared to others, Li Fa was quite reserved, but compared to her usual sullen face when she was unhappy or her forced smile, she was quite lively today.
The teacher then walked up to Tang Chenwei: "Tang Chenwei is the richest guy in our class, right?" The teacher asked as she walked up to him, taking out a bottle of Sprite.
"Teacher, I'm lively too!" Tang Chenwei, seeing that Teacher Li Zhenzhen's behavior would surely bring him benefits, volunteered, shaking his body up and down.
"Please drink." The teacher told him to calm down and drink Sprite first. Watching him drink another beverage of unknown origin, I remembered his past experience of being drugged by Li Fa and having his semen inside Yu Jie, and I was a little worried for him. But the teacher probably wouldn't drug him randomly, right? As Tang Chenwei took a small sip with some doubt, the teacher suddenly grabbed Tang Chenwei's genitals with both hands!
"Pfft...!" The moment Tang Chenwei spat out the Sprite, which was white due to the fizz, the teacher continued, "Bruce Willie is a ghost! Ace is dead! Kate lost an arm and then died! Black Panther T'Challa..." "Enough! I don't want to hear it!" Tang Chenwei covered his ears with both hands, closed his eyes, and screamed.
"Are you afraid of being shocked?" Teacher Li Zhenzhen looked at Tang Chenwei's terrified expression and almost bent over laughing.
"We're going to see it this weekend, don't shock me." Tang Chenwei rarely acted so weak.
"Ke, even if you're as wealthy as Gates, you're still afraid of being shocked. So it's 'as wealthy as Gates but shocked,' right? Remember? The members of group 2A are 'beryllium, magnesium, calcium, strontium, barium, and radium,' and they react with carbonic acid to form a white calcium carbonate precipitate." The teacher pointed to Sprite. Soda is a weak form of carbonated water, so when Tang Chenwei drank Sprite, the white liquid he sprayed out was the white substance formed by the reaction of group 2A with carbonic acid. Then, she gestured the location of group 2A on the right side of her breast, and gave Tang Chenwei a 2A sign.
Teacher Li Zhenzhen then walked back to the front of the classroom, took out a plastic bag, and took out many bright red cherries, giving one to each person.
"Here are some cherries for you," the teacher said in Taiwanese.
Okay, so it was the "boron, aluminum, gallium, indium, thallium" part!
"Boron, aluminum, gallium, indium, thallium." Sure enough, the teacher then gestured downwards, roughly to the right of her left nipple, saying, "3A group." She then hung the 3A group sign on the blackboard, with a cherry taped below it.
"Huh?"
He Mengxian sighed, exasperated by the terrible mnemonic. "
He Mengxian, go stand on the far left as punishment!" The teacher rarely punished students, which was why she was so easily taken advantage of. Her sudden outburst startled everyone, leaving a deep impression.
"The sighing migrate west!" The teacher pointed to roughly her left nipple, then gestured downwards, repeating, "The sighing migrate west! We usually consider the direction of the blackboard as north, so the left side is west, hence 'carbon, silicon, germanium, tin, lead'!" She then walked over to He Mengxian and gave him the 4A group sign.
I think the faces of the whole class were practically ready for a Go game by now; our faces went from three lines to a complete grid of lines.
"Comparable to Gates, did you bring a vibrator?" Teacher Li Zhenzhen suddenly turned to Tang Chenwei, who frantically pulled out his magic bag to search for it.
"Of course I do, teacher, do you want to use it?!" Tang Chenwei happily took out a pink vibrator, turned it to the highest speed, and made it buzz non-stop.
The teacher walked towards Yang Siyu with the vibrator. This girl was full of a sense of justice and had a pretty face. She had droopy eyes and looked a bit like a protagonist in a shoujo manga. Her eyes were dreamy, but she wasn't as carefree as the other students in this physics and chemistry class. At least I hadn't even seen what her vagina looked like.
"Teacher, what are you doing?" Before she could finish speaking, Teacher Li Zhenzhen was already holding the vibrator and pretending to put it in Yang Siyu's hand. She instinctively crossed her arms over her chest, squeezed her legs together, and curled up into a ball.
"Don't be afraid, 'Close your body when the egg comes,' close your body when the vibrator comes. It's good to be reserved like that, but the teacher hopes you will participate more in class activities." The teacher said gently. After speaking, the teacher did not make things difficult for Yang Siyu anymore, but only gave her a 5A card. In the blink of an eye, she had already reached the 5A group on the outside of the left nipple.
"I'm not like you guys who love to play! Close your body when the egg comes, 'Nitrogen, Phosphorus, Arsenic, Antimony, Bismuth,' did you hear me!?" The teacher pretended to be angry and scolded us a little, but wasn't she the one who loved to play the most in the whole class?
"Next, the best in the class, Huang Ruoli." The teacher walked up to Huang Ruoli, who I thought only had a penis as big as a cow.
"Stand up." Huang Ruoli stood up without understanding why, and her pants were immediately taken off by the teacher.
The teacher sexyly took out the remaining cherry and fed it to Huang Ruoli, then dipped her right hand in a little water poured from the thermos and wiped it on Huang Ruoli's butt.
"What are you doing, teacher!" Huang Ruoli jerked forward. The cold water hitting his butt in this weather, combined with the relaxed atmosphere and subtle teasing from the teacher, caused his penis to slowly harden.
"I'm 'raising cattle and washing their butts'! 'Oxygen, sulfur, selenium, saturated polonium'!" Huang Ruoli then grabbed a 6A-class badge and sat down, his penis erect.
"Next is the 7A-class..." The teacher was about to continue when Tang Chenwei interrupted him: "Teacher, I know!" Then he walked up behind Teacher Li Zhenzhen without permission, and before she could turn around to see what he was up to, he had already grabbed her breasts!
Although the teacher had tried many tricks, she had never been ambushed by a student before, especially since Tang Chenwei and Chen Yuhao rarely had any contact with her breasts. This startled me.
"Teacher, I'm helping you think of a mnemonic. Your mnemonic just now was terrible!" Tang Chenwei grabbed one of the teacher's breasts with each hand, while teasing her nipple with his index finger. The teacher's legs were tightly clamped together due to tension, and she twisted her body to resist.
"This is what they call 'Just give you pleasure!' (Taiwanese)." Tang Chenwei pointed to the "fluorine, chlorine, bromine, iodine, and arsenic" line on the periodic table on the teacher's body, and then suddenly lifted up the teacher's t-shirt. Before the teacher could react, he unhooked the back of the teacher's purple bra and lifted it up!
Teacher Li Zhenzhen had undressed and even had her body penetrated by students' penises many times in class, but she had never experienced being forcibly assaulted by a student like this. Like a weak, ordinary woman, she could only scream and couldn't react at all, just shouting, "Hey! What are you doing!? Ah!" until her two large breasts were completely exposed.
"Tang Chenwei, what are you doing!?" Teacher Li Zhenzhen finally managed to break free from Tang Chenwei's hands. She didn't have time to put on her bra, but at least she pulled down her t-shirt to cover her already erect pink nipples.
Tang Chenwei, however, toned down his earlier initiative and stammered, "What I meant was, 'Helium, Neon, Argon, Krypton, Xenon, Radon,' 'Elegant guests move first,' so that elegant guests like me can make the teacher's chest feel high." "I already had the mnemonic ready, I don't need your nagging!" Teacher Li Zhenzhen adjusted her t-shirt with both hands, as if trying to put her bra back on, but she suddenly stopped.
"Actually, the periodic table doesn't need a mnemonic. If you really want to memorize it, just recite it a few times and you'll memorize it. Mnemonics are just for cram schools to show off their skills or demonstrate their abilities," Teacher Li Zhenzhen said earnestly, then gave the 7A group sign to Cheng Yixin, leaving the 8A group sign on the ground unattended.
"With the aptitude of your classmates, you don't need any mnemonics at all. If the mnemonics really help you, it's fine to learn a little bit." Then she lifted her t-shirt, revealing her full breasts, which were already exposed by Tang Chenwei, with her nipples slightly upturned. She seemed to be a little high from Tang Chenwei's actions. After that, she didn't put her t-shirt down again, leaving her breasts exposed to help everyone memorize.
"We've already learned about the vertical 'groups,' now let's continue with the horizontal periodicity. The first period only has two elements, hydrogen and helium. You can imagine, if there's a shady tutoring center owner..." The teacher paused, then pointed towards the direction of Director Jiang Wangcheng's office. The students smiled knowingly. However, Jiang Wangcheng wasn't the owner; he just acted as if he was the head of the tutoring center. In reality, the owners were Tang Chenwei's father and Sister Yu, a married couple.
"If a ruthless tutoring boss ordered that the school bus could only depart when it was full, and if it wasn't full, they'd rather kick the students off than leave due to cost considerations, what would you, as the driver, do? The first cycle is like a two-seater school bus. If both seats are full, it's helium; if only one seat is occupied, it's hydrogen. So, what do you do if there are two people on the bus?" the teacher asked.
"Just drive," Zhen Shuzhu replied.
"Right, you don't have to do anything extra, just drive. That's why 'helium' is also known as 'inert gas' or 'dull gas,' because it doesn't react easily. Like I just did, I was forced to 'get a 'happy milk' first, and that's why I threw the 8A group on the ground, because 8A usually doesn't react." The teacher glared at Tang Chenwei, but her charming eyes showed she wasn't angry at all.
"What about 'hydrogen' if only one person is on the bus?" the teacher continued.
"Find another person? No, kick them off the bus!" He Mengxian replied.
"Middle school students usually kick him off the bus, but actually, either way is fine. You can bring in another student, or you can kick one of the existing students off the bus," the teacher continued.
"The second cycle has eight elements, like an eight-seater school bus. The first element in the second cycle, lithium, is like an eight-seater bus with only one person on it. What do you do?" The teacher walked up to Li Fa and asked.
"Kick him off the bus," Li Fa replied with a typical expression.
"Right."
"You cheeky Tang Chenwei, what about the second element in the second cycle, 'beryllium'? An eight-seater bus with two people on it?" The teacher then asked Tang Chenwei next to him.
"Kick him off the bus too."
"Right."
The teacher then walked up to Huang Ruoli and asked, "What if an eight-seater bus now has six people on it, which is the 'oxygen' in the 6a group of 'cattle washing buttocks,' 'oxygen, sulfur, selenium, niobium, polonium,' what do you do, driver?" "Kick him off the bus," Huang Ruoli replied, focused only on his erect penis and Li Zhenzhen's exposed breasts, following the answer of the student in front of him.
"I'll kick you out of the classroom or kick you off the bus," the teacher continued. "Isn't it easier to kick six people off the bus than to grab two people onto it?" "What I just explained is one of the most important concepts in chemistry. You must quickly familiarize yourselves with which elements in the periodic table like to grab people onto the bus and which like to kick people off. Later, we'll mention that there are other fundamental particles inside atoms, one of which is called an electron. All chemical reactions are related to the gain or loss of electrons. What I just had you grab onto or kick off the bus was the electron. Originally, atoms are uncharged, but electrons are negatively charged. Atoms that gain electrons become negative ions, or anions, while atoms that lose electrons become positive ions, or cations." Teacher Li Zhenzhen gave examples of the positive and negative charge tendencies of atoms in different periods on the electronic whiteboard.
"However, there are exceptions. Theoretically, a nitrogen atom should grab 3 electrons to form a -3 valence anion, but sometimes a nitrogen atom can also kick off all 5 of its original electrons to form a +5 valence cation; the same goes for sulfur atoms, which can be -2 or +6." The teacher continued.
"Now, everyone, please come to the front of the stage and draw lots. Then, find the corresponding classmate based on the element you draw, complete the compounds on the blackboard, and the one that forms the most kinds wins." The teacher took out a cardboard box that was made into a lottery tube, which was already filled with small paper slips. At the same time, the teacher asked us to move the desks and chairs to the far side, leaving most of the space in the middle empty.
"For example, if a student draws sodium, since it's a group 1a element, they'll usually 'get rid of one student,' meaning they lose one electron and become positively charged. They then need to find a negatively charged student, like a chloride ion, to combine and form an uncharged compound." The teacher wrote the element symbol for sodium, NA, and added a plus sign in the upper right corner to indicate a positively charged sodium ion; then for chloride ion, it was Cl with a minus sign in the upper right corner… "That's how you complete sodium chloride, commonly known as table salt. Both students who complete sodium chloride get points, and we'll tally the most frequently formed compounds on the electronic whiteboard. If, after several rounds, the whole class forms 20 compounds, the compound with the fewest students gets 20 points for each element, and the most common gets 1 point. The student with the lowest score will have to come for weekend tutoring." The teacher suddenly lowered their voice, narrowed their eyes, and threatened us with a blank expression.
Having just finished our midterms, who among us wanted to sacrifice our weekend for tutoring? Immediately, everyone was eager to give it their all!
"Teacher, we don't quite understand the procedure yet," Yang Siyu raised her hand and asked. She seemed to have become more enthusiastic after the teacher's reminder.
"Let's go through the procedure once, but this time it won't count towards the points. Don't open your lots after drawing them; anyone who does will lose ten points!" The teacher shook the lot-drawing tube, and we drew our lots in turn.
Soon everyone had drawn their lots, and after the teacher counted "1, 2, 3," we all opened our lots simultaneously. I drew a calcium ion with a "2" in the upper right corner and a plus sign, meaning it carries two positive charges. Huang Ruoli next to me drew a chloride ion with a negative charge of 1. The teacher herself drew a hydrogen ion.
"Now you have a few options. The first is to actively look for corresponding element combinations. For example, Tang Chenwei got nitrogen ions (that is, n with a 3 in the upper right corner and a negative sign after it). He can find three hydrogen ions with one positive charge to form ammonia, or he can find three magnesium ions with two positive charges with the same nitrogen ions to form magnesium nitride. Since not all of you will necessarily have three people draw magnesium ions every time, the probability of forming magnesium nitride will definitely be low, and you are more likely to get a high score in the final tally." The teacher wrote mg3n2 on the blackboard.
"The second option is to use high volume and low margins, which means forming more common compounds. The disadvantage is that the score will be lower each time, but at least you won't get 0 points. For example, sodium chloride, dihydrogen monoxide, etc." The teacher drew the structure of dihydrogen monoxide on the blackboard.
"Hydrogen monoxide is extremely toxic. Up to 70% of the substances in the bodies of people who die from poisoning are hydrogen monoxide; cancer patients also have large amounts of hydrogen monoxide in their bodies, and people addicted to hydrogen monoxide will die within 168 hours of being without it..." the teacher said with a serious, enigmatic expression.
"Teacher, you're talking about water, right?" Zhen Shuzhu raised her hand and asked.
"No, no, no, I'm not talking about water, but it's 90% similar to water. Its freezing point is 0 degrees Celsius, and its boiling point is 100 degrees Celsius..." That's water, damn it!
When we realized that the teacher was talking about water, she said earnestly, "This is the famous hydrogen monoxide fallacy, using pseudoscience to mock water, just to make people laugh. But it also shows that if you don't study science well in junior high school, many people will be fooled by charlatans who predict earthquakes, or unscrupulous merchants selling health foods or treatments." I remembered the crazy person who was predicting where earthquakes would happen every day on Facebook a few days ago. Sadly, many people were even begging him to do "research."
"Alright, so besides the two strategies mentioned above, you can also try some unconventional methods to get high scores. However, the products of chemical reactions aren't determined by mere words; we need to conduct experiments to determine if these substances can be produced. We're just summarizing the results of previous experiments, so if the substance you synthesize doesn't exist, you might get 0 points." The teacher then wrote common compounds on the blackboard.
"So potassium disulfide, potassium fluorine-uranium-carbon, and similar substances can't exist, right?" Tang Chenwei asked.
After searching for the element symbols in the Chinese characters, I managed to spell out "kiss" and "fuck"!
"At least for now, based on their electronic configurations, it's unlikely that they can be synthesized," the teacher said.
"Teacher, since there are several identical lots, why do I have to pair them with someone? Can I pair them with someone I like?" Tang Chenwei continued.
"Yes, that's the scary part. Every time the whole class draws lots, we only have 3 minutes to pair them. Those who are bad at this might get good cards but still not be able to synthesize anything," Teacher Li Zhenzhen chuckled mischievously.
"How can you do that!" Huang Ruoli protested. Actually, he didn't need to worry; it was me and Li Fa who needed to be more concerned.
"So, what I'm going to teach you today is that you need to be good at studying as well as being a good person. That's how you achieve great things! That's all!" After the teacher gave the order, I started looking for negatively charged ions. Li Fa happened to draw an oxygen ion, which carries a divalent negative charge. It could be paired with my divalent positively charged calcium ion to form calcium oxide. So I stood next to her to indicate that we had successfully paired up. She actually gave a shy smile.
"Teacher, I don't think this is right." Although Chen Yuhao and Zhen Shuzhu had successfully paired up, and they were both monovalent ions, he raised his hand to object.
"What's wrong?" Teacher Li Zhenzhen asked.
"If I clearly paired up, and someone else barged in, how do I know who barged in, and who gets the points?" Chen Yuhao asked.
Right, I clearly didn't pair up, but I rushed to the side of someone who had successfully paired up. How do you judge that?
"Uh, I didn't expect anyone in the class to be so rude." The teacher laughed awkwardly.
"In my opinion, to highlight the valence of positive and negative charges, it's not easy to determine the valence or which one successfully pairs first with just this small piece of paper. We can use this method to identify them, and it also highlights the greater energy when chemical substances combine!" After saying that, he actually took off his pants. Although Zhen Shuzhu was very unwilling, she finally gave in to Chen Yuhao's insistence and squatted down to suck his penis.
Damn, the positive and negative ions did combine!
"Isn't it obvious who is willing and who is forced to join in?" Chen Yuhao said with a smug smile.
"Yes, teacher, I agree. You just said that you should be good at studying and also good at being a person. Adding this part can better show who is more popular." After Tang Chenwei seconded, He Mengxian and Huang Ruoli also cheered to adopt this plan.
"Okay, okay, enough noise. Let's do it this way. It's also a good opportunity for you to practice the combination of 'chemical bonds'." Unable to resist the harassment of these brats, Teacher Li Zhenzhen had no choice but to agree to this method.
After the game officially started, I drew magnesium ions in the first round, and Huang Ruoli drew barium ions, which belonged to the same group as me: beryllium, magnesium, calcium, strontium, barium, and radium. We immediately raised our slips of paper to find someone to pair with.
My only friend was Li Fa, who drew chloride ions, and needed to pair with me, which were negatively charged ions. However, we only had 3 minutes, so I decided to go to her side first.
When she saw me running towards her again, her face turned completely red. Yang Siyu, who was next to me, also drew chloride ions. When she saw that I had raised my hand, which was divalent magnesium ions, she also came over to me and Li Fa.
It seemed that the first round was successful, but a successful pairing required one more action. Seeing my hesitation, Li Fa quickly offered to help me take off my pants. Seeing her enthusiastic response, I decided to go for it and managed to take off my pants in ten seconds, revealing my limp penis.
Without a word, Li Fa squatted down and took my penis into her mouth, frantically pulling off her clothes. I instantly became hard because of her skillful sexual techniques. Just as I was feeling relieved that I'd at least scored in the first round, I noticed Yang Siyu standing awkwardly behind Li Fa.
Damn it! So only Li Fa and I formed a chemical bond?
Noticing my gaze wasn't on her but looking up at me, Li Fa quickly realized what was happening and pulled Yang Siyu to take her place. Then she grabbed my hand and made me put my fingers inside her vagina!
As I inserted my right middle finger along the cleft of Li Fa's crotch into her vagina, Yang Siyu closed her eyes and endured taking my glans into her mouth. But unsure how to form the correct chemical bond, she swallowed the entire penis in one gulp!
Yang Siyu, who seemed docile and inexperienced, burst into tears the moment my glans pressed against her uvula. Just as I was about to pull out to make her feel better, she insisted on keeping it in her mouth, only letting me move my hips back slightly. Then she felt she could take it in deeper, finally letting my glans rest deep in her throat. Those two actions alone excited me greatly.
It wasn't just us; Cheng Yixin, a clueless junior in the first year of junior high, had started hanging out with Du Yuerong without any hesitation since their last encounter. This time, they immediately got into it, and by the end of the time, they were already together. Cheng Yixin's penis was inside Du Yuerong's vagina from behind, while Du Yuerong held two erect penises on either side—one belonging to He Mengxian, and the other to a classmate whose name I couldn't recall.
Teacher Li Zhenzhen, who drew the divalent negatively charged sulfur ion, subtly held the penis of Tang Chenwei, who had a positively charged calcium ion, thus forming a bond. Tang Chenwei's face showed his deep resentment.
"In this round, Du Yuerong and her group formed ammonia. She herself is a trivalent negatively charged nitrogen ion. Cheng Yixin and the others are hydrogen ions. Their structures are the most complex and they have a chance to get high scores. In addition, many people did not form bonds, whether they wanted to get high scores or missed the time." The teacher wrote ammonia, magnesium chloride in my group, calcium sulfide in her own group, and common substances such as water and carbon dioxide on the electronic whiteboard. Then she also marked the students' seat numbers under the formed compounds as a basis for scoring after the event. Unexpectedly, nearly a third of the students did not form any compounds and got 0 points in the first round, such as Zhen Shuzhu and Huang Ruoli.
"Calcium sulfide, cas, Tang Chenwei, you're top-quality meat!" Chen Yuhao, who had discovered that Tang Chenwei and Teacher Li Zhenzhen formed the "cas" mark of top-quality meat, laughed and joked with Tang Chenwei.
"I'm a top-quality penis!" Tang Chenwei smiled, sticking out his penis. Although the other groups hadn't really gotten into it yet, most of the male students were already aroused by Teacher Li Zhenzhen's bare breasts, Li Fa who had stripped naked to get me an erection, and the Du Yuerong 4P group that had already started.
The second round was much more intense. I, who was unpopular and wanted to rely on Li Fa, drew an oxygen atom, which had a negative valence of 2. However, Li Fa also drew a chlorine atom with a negative ion. Seeing me from afar, she wanted to run towards her but gave up. She also showed a disappointed expression. She paired with Chen Yuhao's hydrogen atom, but she also followed Teacher Li Zhenzhen's example and only held Chen Yuhao's penis. Chen Yuhao, on the other hand, looked at Li Fa's beautiful naked body with satisfaction and smiled lewdly. Li Fa remained expressionless from beginning to end.
To get a high score, Tang Chenwei, who drew the oxygen acupoint, forced Zhen Shuzhu, who had sulfur acupoint, to perform an extremely difficult pose. Zhen Shuzhu lay on top of He Mengxian, her B-cup breasts barely clamping his penis under his pressure. She herself held a classmate's penis in each hand, her buttocks raised high, waiting for Chen Yuhao's entry. Meanwhile, two male classmates placed their penises under her armpits, while Tang Chenwei put his penis in Zhen Shuzhu's mouth, secretly thrusting while waving to Chen Yuhao!
This is a bizarre spectacle!
When I saw her group, I found it hilarious, then I felt a chill for Tang Chenwei. Was it okay for him to publicly call his friend's girlfriend "penis" like that? Wouldn't that damage their friendship? Or was he getting revenge for Chen Yuhao sleeping with his mother?
But seeing his attentive and sincere attitude, and leaving his most important hole for Chen Yuhao, if I were Chen Yuhao, I couldn't be angry either. But Chen Yuhao is already with Li Fa!
"Chen Yuhao, hurry up, the sulfuric acid is waiting for you!" It turned out they were challenging themselves with the difficult H2SO4, a high-difficulty task requiring seven people. Did you think they were playing a game
of combining six gods? After finally getting into the six-gods-combination pose, Chen Yuhao realized that he was only missing one hydrogen ion to form a high-molecular-weight sulfuric acid. Just as he was about to break free from the bond with Li Fa, Li Fa, who had been expressionless, started to smile. Chen Yuhao, who clearly wanted to leave, couldn't shake off Li Fa's tight grip on his right hand for the time being!
"Wait, we're not missing hydrogen, damn it!" Tang Chenwei only now realized that their group, besides Zhen Shuzhu's sulfur, already had two hydrogen atoms and three oxygen atoms. He had miscounted in his haste!
"Damn it, are there any oxygen atoms left?" Tang Chenwei anxiously asked the students wandering around like headless flies in the middle of the lab. However, most of the simple and common atoms like oxygen atoms had already been bonded. Most of the atoms in the room were less common ones like selenium, boron, and germanium.
"I am an oxygen atom..." I stammered, having always struggled to infiltrate their circle, only somewhat familiar with Tang Chenwei and having had a few physical encounters with Zhen Shuzhu.
"Hurry up, time is running out!" Tang Chenwei urged me to hurry over and bond. I didn't have time to reassign who would insert into which hole, so I gritted my teeth and went over with my erect penis.
Although I had already ejaculated inside Zhen Shuzhu twice in class and privately, we were still like oil and water on the surface. Hearing that I was the one to bond, Zhen Shuzhu spat out Tang Chenwei's penis, twisting her buttocks and yelling, "No! Chen Jianian, get out!" "No, time's up!" He Mengxian and Tang Chenwei urged in unison.
Seeing the dark and alluring genitals beneath her twisting white buttocks, and her expression that clearly craved sex but wouldn't admit it, I no longer hesitated, gripping my penis and joining the ranks of "acid"!
Zhen Shuzhu was forced into this position, and her vagina was actually quite dry. I tried to insert it, but only managed to deform her vulva without actually penetrating. I quickly applied some saliva to the head of my penis, which successfully opened her vaginal opening, and my penis pierced between her labia.
"Mmm!" Zhen Shuzhu groaned. I pulled my penis out a little bit, then thrust it all the way in again. She kept moaning "Mmm, mmm," but couldn't scream loudly because she had Tang Chenwei's penis in her mouth.
Seeing the tingling look on my face and the involuntary slight thrusting of my hips, Tang Chenwei winked at me and shook his head. I obediently stopped thrusting, simply enjoying the warmth and tightness of someone else's girlfriend's vagina, which was already incredibly pleasurable.
With my back to Chen Yuhao, I couldn't see his expression, but I felt incredibly smug, as if I had stolen the girl from Li Fa's class, especially the one who bullied Li Fa last time. It was as if I was avenging Li Fa.
Strangely, Tang Chenwei, who always got full marks in math, couldn't possibly have miscalculated the number of hydrogen and oxygen atoms. Was he planning this all along to make me do Zhen Shuzhu in front of Chen Yuhao?
This round ended quickly, and our group received the teacher's praise, after all, the difficulty of finding seven people was obvious! At this stage, in order to save time and increase efficiency, the students on the field were already disheveled, and Zhen Shuzhu, Li Fa, and Du Yuerong were completely naked!
In the third round, I drew copper, which is +2 valence, while Li Fa drew oxygen. Theoretically, I could just combine with her directly, but looking at her expectant eyes, I pretended not to see her and looked around.
Seeing my expression, Li Fa assumed I had drawn another ion with the same charge as hers that couldn't bond, and reluctantly went to bond with others. I didn't reach the center of the lab until a minute and a half later. Seeing me approach, Zhen Shuzhu, who had drawn the joker "selenium," turned to leave.
"I can pair with you," I said slyly, showing her my slip of paper, which read Cu2.
"Really?" Zhen Shuzhu asked cautiously, turning to the side.
"And it's a high-level group, don't believe me if you don't." I teased her, keeping her in suspense. Actually, I wasn't sure either, but since "oxygen" in "raising cattle and washing butts" and "oxygen, sulfur, selenium, succinate, polonium" has a negative valence of -2, then "selenium" should also have it, since elements in the same group have similar chemical properties.
"Come on then," Zhen Shuzhu held out her hand, wanting me to place my penis in it, just to pretend we were bonding.
"No, I need to find others. Let me in from behind first, and I'll teach you how to bond with others later." I pointed to Zhen Shuzhu's crotch, indicating that she should turn around so I could do it to her from behind again.
"No!" Zhen Shuzhu glared at me resentfully, making a move to leave.
"It doesn't matter. With your score just now, you'll probably be kept for weekend tutoring. I wonder if Tang Chenwei and Chen Yuhao will meet up with other girls when they go to see Black Panther." I also played hard to get and turned to leave.
"Okay, okay, you have to hurry up and find others for me." Zhen Shuzhu turned her back to me irritably, sticking out her tempting buttocks. Her vulva, which I had just entered once and even secretly thrust a few times into, was once again exposed to my thirsty penis. Her two thin labia minora were slightly parted, and the opening between her genitals was more obvious this time. I unceremoniously inserted the head of my penis, but deliberately did not insert it all the way in at once. Instead, I pretended that the connection was not smooth and moved back and forth several times.
"Chen Jianian, what are you doing?" Chen Yuhao's voice rang out from behind me.
"I'm helping Zhen Shuzhu. Her element is hard to find a match for; it might even result in a zero." I answered nonsensically, suppressing my unease and the pleasure in my groin.
"Watch out for Lin Bei!" Chen Yuhao said fiercely.
"Aren't you still looking for someone?" Zhen Shuzhu frowned, enduring the fullness inside her vagina, and turned to ask.
"I am. The rest are all oddballs." I pretended to look around, but actually let my penis rub against Zhen Shuzhu's body. After a few thrusts, I felt her expression change. She no longer pretended to be suffering from the pain of being forced into penetration; instead, her brows relaxed, and she occasionally frowned and gently twisted her hips.
"Hurry up and find someone." Zhen Shuzhu occasionally reminded me while enduring my teasing and thrusting. Actually, selenium and copper can bond directly, and I was taking advantage of her with ease.
"Don't make a fuss, let me calculate the price." I pretended to be busy, but actually I was taking the opportunity to take advantage of Zhen Shuzhu. I had no other thoughts than to fill her up.
"Hurry up!" Seeing that time was passing, Zhen Shuzhu, besides instinctively cooperating with my slight thrusting, also urged me to hurry up and find a classmate who hadn't been paired up yet.
"Ah, I miscalculated. Actually, we already got points this way." I contentedly buried my glans deep inside Zhen Shuzhu's vagina, waiting for the teacher to tally the scores.
"Really?" This silly girl had been fucked for over a minute for nothing, yet she only felt the joy of scoring points, ignoring the shame of being fucked in front of her boyfriend.
When the third round was over, my group received praise from Teacher Li Zhenzhen: "Although selenium is rare, it is indispensable in the human body; although selenium is rare, everyone is already familiar with its relative oxygen. You should apply what you've learned to other situations. Oxygen and selenium are in the same group, so selenium could possibly be -2 valence like oxygen. Therefore, the bond between copper and selenium is not as complicated as the bond between copper and oxygen to form copper oxide. Zhen Shuzhu and Chen Jianian performed very well!" Teacher Li Zhenzhen tallied the compounds and their frequency on the electronic whiteboard. The students whose compounds appeared under common compounds complained bitterly, indicating that although they had successfully formed bonds, they might not get many points.
Just as I was gloating over getting a high score and having worked for Zhen Shuzhu for nothing, I realized that I could have directly bonded with her, but instead chose to go for Zhen Shuzhu instead. Li Fa looked a little disappointed, silently playing with her fingers in the corner.
In the fourth round, I drew a not-so-good card—carbon from group 4a!
Carbon is a bad card because it can be simple or complex; it can be positively tetravalent, negatively tetravalent, and even positively divalent under special conditions. But with my poor luck in finding elements to bond with, where am I supposed to find a bunch of elements to bond with?
Luckily, Li Fa drew an oxygen atom this round, which could form carbon monoxide even with just her. I happily went to her side.
Unlike her previous expression, she didn't have the first one; instead, she pursed her lips with a hint of sadness.
"Fafa, what's wrong?" Seeing her obvious change in mood, I quickly called her by her nickname.
"Why did you go for Zhen Shuzhu just now?" Although I had already walked to her side, she didn't seem to want to "bond" with me. Her head drooped lower and lower until I couldn't see her expression anymore.
"I was messing with Chen Yuhao, huh?" I replied smugly, still basking in my recent victory. I couldn't help but rub my penis, still aroused by Zhen Shuzhu's seductive appearance, oblivious to the rising pleasure. I thought that if I really wanted to ejaculate later, I could do it on her during my "bondage" with Li Fa.
"What does messing with Chen Yuhao have to do with Zhen Shuzhu?" Li Fa asked.
"Zhen Shuzhu is his girlfriend. He must be disgusted that his girlfriend was being fucked by someone else in front of him!" I shared my thoughts without reservation. Li Fa was my good friend; he would understand. While recalling the process of fucking Zhen Shuzhu, I admired Li Fa's straight, fair thighs.
"So if the person you like is fucked by someone else, you won't love her anymore?" Li Fa's voice was broken, while I stared longingly at the slit under her sparse pubic hair, as if I were fucking her right there.
This is truly a profound question. My memories of the girls I liked in elementary school are quite faint now. The one I remember most vividly recently is probably my teacher, Li Zhenzhen. I used to like her so much that I would give her all my saved allowance. But after seeing her get penetrated by Cheng Yixin, Tang Chenwei, and Chen Yuhao, I think I don't like her as much anymore.
Seeing that she didn't react, I took the initiative to put my left hand under her crotch, freely stroking her thigh, moving upwards to the cleft, gently rubbing the soft petals of her vulva, while my right hand continued to masturbate.
Suddenly, my thoughts were interrupted by Yang Siyu's voice. She shyly approached us and asked, "Can I join your carbon dioxide group?" It turned out that she had also drawn an oxygen atom. I quickly stopped rubbing back and forth with my right hand, turned around, and continued to place my left hand under Li Fa's crotch to conform to the "bonding" action, while my penis was positioned near Yang Siyu's lower body, which was only covered by underwear.
"Okay." No matter what, the difficulty of a three-atom structure is definitely higher than that of a two-atom structure. I readily accepted Yang Siyu's suggestion, and also took the opportunity to fantasize about this lovely girl who was so reserved about her body and had never shown her genitals in class.
Although I couldn't see the structure of Yang Siyu's genitals, the pubic hair visible through her panties was very sparse, so pure that I wanted to just pull down her panties and admire her vulva.
"You've already bonded, so give me this side." Seeing that my hand seemed to be connected to Li Fa's, Yang Siyu actually squatted down in front of me, hesitated for a moment, and finally took my penis into her mouth!
Perhaps encouraged by the teacher, this was the second time today that she had taken my penis into her mouth. I couldn't help but hold the back of Yang Siyu's head with my right hand, while my left hand dug even harder into Li Fa's vulva, inserting both my middle and ring fingers, moving them in and out as if I were fucking Li Fa with my penis.
Although it was the second time Yang Siyu had given me oral sex, this time, besides the novelty of the first time, there was also the visual feast provided by the slightly protruding mons pubis under her panties. Adding to that the stimulation of having just fucked Zhen Shuzhu for a while, and the stimulation of masturbating while touching Li Fa's vagina, I couldn't help but ejaculate in Yang Siyu's mouth after only a few thrusts!
This was my first time being so close to this righteous yet pretty female classmate, and my excitement was incomparable to any other oral sex. I maliciously didn't warn Yang Siyu, and even held her head with my right hand to prevent her from backing down. With my eyes closed, I satisfiedly released my pent-up desires for Zhen Shuzhu and Li Fa into this female classmate's mouth.
"Mmm…!" Her mouth filled with the foul-smelling semen, Yang Siyu gagged, then coughed and said, "Sorry, I didn't expect…" Sorry my foot! She actually thought I ejaculated because of her. Well, in some ways, you could say it was her fault.
[The End]

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A vivid understanding of the periodic table

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