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.
Positive vs Negative Work
What’s the difference between positive and negative work?
Why is balancing chemical equations necessary?
Beginners often balance equations mechanically but don’t know the “why.”
Kinetic Energy Intuition
Why does a moving truck cause more damage than a moving scooter at the same speed?
How do limiting reagents control reactions?
Explain using a real-life analogy.
Work-Energy Theorem
How does the work-energy theorem explain braking in a car?
How is percentage composition calculated?
Given MgCO₃, find % of Mg.
Power in Real Life
Is a 1000W microwave always “more powerful” than a 500W one?
Why is Avogadro’s law important?
Show its role in gaseous reactions.
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