Potential Energy Analogy
Why is a ball at a higher shelf considered to “have energy”?
Common misconception: 1 mole always equals 22.4L
Is this true?
Conservation of Energy
Does energy ever “disappear”?
How did Rutherford's experiment change our atomic model?
Explain why Thomson's “plum pudding” failed.
Rotational Inertia
Why is it harder to open a door by pushing near the hinges than near the handle?
Why are electrons not sucked into the nucleus?
Explain using Bohr's theory.
Rolling vs Sliding
Why does a rolling ball slow down less than a sliding one?
What are quantum numbers and why four of them?
Students struggle with the 4-number system—simplify it.
Moment of Inertia
Why does a gymnast pull in her arms while spinning?
What is the significance of de Broglie's equation?
Explain with real-life analogy.
Gravitation Basics
Why don't we feel Earth pulling everything together if gravity is so strong?
Why can't two electrons in the same atom have identical quantum numbers?
Pauli Exclusion Principle made simple.
Free-Fall Intuition
Do heavier objects fall faster than lighter ones?
Why do energy levels converge at higher shells?
Seen in hydrogen spectra.
Weightlessness in Space
Why do astronauts “float” inside the ISS if gravity still exists there?
Study Materials
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