Why is balancing chemical equations necessary?
Beginners often balance equations mechanically but don’t know the “why.”
How do limiting reagents control reactions?
Explain using a real-life analogy.
How is percentage composition calculated?
Given MgCO₃, find % of Mg.
Why is Avogadro’s law important?
Show its role in gaseous reactions.
Common misconception: 1 mole always equals 22.4L
Is this true?
How did Rutherford’s experiment change our atomic model?
Explain why Thomson’s “plum pudding” failed.
Why are electrons not sucked into the nucleus?
Explain using Bohr’s theory.
What are quantum numbers and why four of them?
Students struggle with the 4-number system—simplify it.
What is the significance of de Broglie’s equation?
Explain with real-life analogy.
Why can’t two electrons in the same atom have identical quantum n...
Pauli Exclusion Principle made simple.
Why do energy levels converge at higher shells?
Seen in hydrogen spectra.
How does Heisenberg’s Uncertainty Principle affect atomic structu...
Make it relatable.
Why do atoms form chemical bonds?
Make it intuitive.
Why is water bent while CO₂ is linear?
Compare using VSEPR theory.
How is polarity determined in molecules?
Use real-life analogy.
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