Why do electrons not crash into the nucleus?
What keeps them from falling in, despite the attraction?
Types of Friction
Why is rolling easier than sliding?
What is the Heisenberg Uncertainty Principle?
Why can't we know both position and momentum of an electron exactly?
Equilibrium
How can a hanging signboard stay still despite gravity pulling it?
Difference between orbit and orbital
Are they the same thing?
Quantum numbers made simple
What do nn, ll, mm, and ss really mean?
Why does the 4s orbital fill before 3d?
Isn't 3d supposed to come first?
Rocket Propulsion
How does a rocket move in space without air to push against?
Why do we need a mole concept?
Students often confuse mole with just a number. Explain its real significance in chemistry.
Common Misconception
Does heavier mean faster when falling?
How to calculate the number of atoms in a sample?
Given 24 g of carbon, calculate the total number of carbon atoms.
Work Done Basics
If I push a wall really hard but it doesn't move, have I done any work?
What's the difference between molarity and molality?
Students mix these up due to similar names. Explain clearly with examples.
Study Materials
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