Gas Laws quiz

More questions about Gas Laws

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   Why does a gas push on the walls of its container?

   Answer: Molecular collisions

   Why: Newton's Principia derived Boyle's law from a model of resting particles that repel one another, a picture later replaced by moving, colliding molecules.

2. 2 Medium

   By what factor does a rigid can's gas pressure rise from 27°C to 327°C?

   Answer: 2

   Why: Gas laws need absolute temperatures: 27 °C is 300 K and 327 °C is 600 K, so the pressure doubles instead of rising twelvefold.

3. 3 Hard

   Roughly how many molecules fill one cubic centimeter of air?

   Answer: $10^{19}$

   Why: This count, about $2.7 \times 10^{19}$ at 0 °C and 1 atm, is known as the Loschmidt constant.

4. 4 Easy

   How does Boyle's law say doubling pressure changes volume?

   Answer: It halves

   Why: Boyle tested it by trapping air under mercury in a J-shaped glass tube and pouring in more mercury to squeeze it.

5. 5 Medium

   How much steam do 2 L of hydrogen and 1 L of oxygen form?

   Answer: 2 liters

   Why: Three gas molecules, two H₂ and one O₂, become only two H₂O molecules, so the 3 liters of gas shrink to 2.

6. 6 Hard

   How many atoms does an air balloon hold versus a same-size helium one?

   Answer: About twice as many

   Why: Air's nitrogen and oxygen come as two-atom molecules while helium atoms travel alone, so equal molecule counts mean about double the atoms.