What is temperature, and how does it affect the movement of particles?
Temperature is a measure of the average speed of particles.
Temperature is a measure of the number of particles.
How does increasing the temperature of a substance affect the speed of its particles?
Increasing temperature makes particles move slower
Increasing temperature makes particles move faster.
How does the movement of particles differ in solids, liquids, and gases?What is kinetic energy, and how is it related to the movement of particles?
It's the energy of motion and relates to how fast they move.
It's the measure of the number of particles in a substance.
Do particles move differently in different states of matter?
They move at a constant speed.
They move slower in solids than gases.
When a solid turns into a liquid, it's called:
Evaporation.
Melting.
Condensation.
Freezing.
When a liquid turns into a gas, it's called:
Melting.
Evaporation/vaporization.
Condensation.
Freezing.
When a liquid turns into a solid, it's called:
Evaporation.
Freezing.
Melting.
Freezing.
Select the difference between condensation and evaporation.
Condensation happens at 120°C, evaporation at 100° C.
Condensation turns gas into liquids, not liquids into gas.
How does water change states when it boils? What happens to its particles?
They slow down during boiling, and turn into a solid.
They gain energy during boiling, and turn into a gas.
How does the arrangement of particles differ in a gas compared to a solid or a liquid?
Particles in a gas are spread out and move freely.
Particles in a gas are closely packed together.
Explain why gases are more spread out and can fill a container of any shape.
Gases have fast-moving particles that can spread out
Gases are sticky and cling to container walls.
Describe the process of melting and what happens to particles when a solid becomes a liquid.
It's turning a gas into a solid. Particles slow down.
A solid turning into a liquid, and particles gain energy.
What is the difference between a physical change and a chemical change in terms of particles?
Particles stay the same but may change how they are arrange
Particles rearrange to form new substances.
Can you explain why a balloon filled with air expands when placed in a hot environment?
The air particles in the balloon lose energy.
The air particles in the balloon gain energy and move faster
Why does this make your hands feel warm?
The heat from the campfire is transferred to your hands.
Your hands release heat energy.
Higher temperature leads to higher kinetic energy.
False.
True.
