Why does soap form lather but oil doesn't dissolve in water?
How do soaps clean greasy clothes?
Power Rating Puzzle
If you plug a 60 W bulb into a 100 W socket, will it blow up?
Why is graphite soft but diamond hard?
Both are carbon — why such opposite properties?
Household Shock Hazard
Why is it dangerous to touch a wet electrical switch with bare hands?
Why is ethanol used in hand sanitizers?
How does it actually kill germs?
Earth Wire Magic
Why do appliances have a green earth wire along with live and neutral wires?
What is the difference between soap and detergent?
Aren't they the same thing?
Short Circuit Scenario
Why does connecting live and neutral directly cause sparks?
Why does carbon form covalent bonds instead of ionic?
Couldn't it just gain or lose electrons?
Compass Confusion
How does a compass always point north?
Why are alkanes called paraffins?
What's the story behind the name?
Motor vs Generator
How does an electric motor differ from a generator?
Why does petrol catch fire so easily?
Is it just because it's a liquid?
Left Hand or Right Hand
How do Fleming's left-hand and right-hand rules differ?
Why did Mendeleev's periodic table become outdated?
Wasn't it accurate enough?
Study Materials
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