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Khan Academy KHAN ACADEMY provides informations about chemistry and everyday science.

16/08/2026

Question 6:
Diamond is thermodynamically less stable than graphite at standard room temperature and pressure (meaning diamond wants to turn into graphite over time). Why aren't diamonds turning into pencil lead in our jewelry boxes? Drop your thoughts on activation energy and kinetics below! 💎✏️

16/08/2026

Question5:
If you had to completely eliminate one from your daily life forever, would you give up Sugar (C12H22O11) or Salt (NaCl)? Choose your side in the comments!

16/08/2026

Question 5:
Why does ice float on water instead of sinking? (Most liquids become denser when they freeze, but water is a rebel!) Can you explain why? 🧊

16/08/2026

Question 4:
Baking soda and vinegar create a classic fizzy reaction, but what gas is actually being released in those bubbles? 🫧

16/08/2026

Question 3: Why does chopping onions make you cry, and what is your go-to trick to stop it? 🧅😭

15/08/2026

Question 8:
Why do elements in the 3rd period and below (like sulfur or phosphorus) have the ability to break the octet rule and form hypervalent compounds, while elements in the 2nd period (like nitrogen and oxygen) strictly cannot? Is d-orbital involvement a myth? 🧪🧠

15/08/2026

Question 7:
The Second Law of Thermodynamics states tha entropy (disorder) in the universe must always increase. Yet, life itself creates incredible, highly organized structures (DNA, proteins, cellular machinery). How does chemistry resolve this paradox? 🧬🌀

15/08/2026

Question 2: I am an element named after a famous planet. I am radioactive and heavy. What am I? (Hint: Think outer space!) 🌌

15/08/2026

Question 1: Which two elements are the only ones on the periodic table that are liquid at room temperature? Drop your answers below! 🌡️👇

22/07/2026

What is the chemical name of paracetamol?

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