Lesson T1.1.2
T1.1.2 Gas pressure and particles Quiz: KS3 Chemistry, Unit 1
20 questions
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Lesson T1.1.2, Gas pressure and particles: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 1: The particulate nature of matter, written with Revision Ninja.
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The 20 questions
-
What causes the pressure exerted by a gas inside a container?
- Particle collisions
- Chemical reactions
- Magnetic forces
- Particle melting
-
What happens to gas pressure if its volume is decreased at constant temperature?
- It increases
- It drops to zero
- It decreases
- It stays the same
-
What happens to gas pressure when a sealed gas is heated?
- It stays the same
- It turns into liquid
- It decreases
- It increases
-
Why does pumping more air into a football increase its internal pressure?
- More particle collisions
- Larger particles
- Heavier particles
- Warmer rubber
-
Which factor does NOT directly affect the pressure of a gas?
- Temperature
- Particle number
- Volume
- Colour
-
Why does squeezing a gas into a smaller volume increase its pressure?
- More frequent collisions
- Slower particles
- Chemical changes
- Larger particles
-
What happens to trapped air pressure when a syringe plunger is pushed in?
- It increases
- It decreases
- It disappears
- It stays constant
-
Which unit is used to measure gas pressure?
- Kilogram (kg)
- Pascal (Pa)
- Litre (l)
- Degree Celsius (°C)
-
Which change increases the pressure of a fixed mass of gas?
- Heating it
- Freezing it
- Cooling it
- Expanding it
-
Why might a sealed bottle of air pop its lid off in strong sunlight?
- Particles move faster
- Particles shrink
- Particles multiply
- Particles disappear
-
Why do gas particles constantly hit the walls of their container?
- Magnetic pull
- Random movement
- Gravity only
- Chemical bonding
-
What do gas particles actually do when they hit the walls of a container?
- Dissolve
- Stick to walls
- Bounce off
- Melt
-
Which change increases gas pressure in a sealed container?
- Removing gas particles
- Expanding the container
- Cooling the container
- Heating the container
-
Why does a car tyre pressure drop in a cold garage?
- Particles get bigger
- Particles vanish
- Rubber dissolves
- Particles move slower
-
What happens to the speed of gas particles when a gas is heated?
- Increase
- Stay the same
- Decrease
- Stop completely
-
What happens to gas pressure when a sealed gas is heated at constant volume?
- Decreases
- Drops to zero
- Stays the same
- Increases
-
Why does compressing a gas increase its pressure?
- Particles grow larger
- Fewer collisions
- More frequent collisions
- Particles move slower
-
Which container has higher pressure if container B has half the volume of container A at the same temperature?
- Both are equal
- Neither has pressure
- Container B
- Container A
-
Why does a sealed crisp packet puff up when taken up a mountain?
- Higher outside pressure
- Cooler mountain air
- Lower outside pressure
- Creation of new air
-
Why does gas pressure act in all directions inside a container?
- Random particle movement
- Gravity pulls particles
- Particles move downwards
- Particles stay still
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