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Water going from liquid to gas represents:
 
A phase change.
 
Lower temperature.
The temperature where, in theory, all particles stop moving is called:
 
Absolute Zero.
 
Freezing point.
This thermogram shows that:
 
The nose is the coldest spot on this face.
 
The nose is the hottest spot on this face.
This thermogram shows that:
 
The forehead and chest are the hottest spots on this face.
 
The forehead and nose are the hottest spots on this face.
This thermogram shows that:
 
The nose is the coldest spot on this face.
 
The chest is the coldest spot on this face.
When heat is transffered through waves, meaning no direct contact, it is:
 
Radiation.
 
Convection.
 
Conduction.
When heat is transffered through gas or liquid particles, it is:
 
Convection.
 
Conduction.
 
Radiation.
When heat is transferred through direct contact of solids, it is:
 
Conduction.
 
Convection.
 
Radiation.
Why does a metal spoon feel colder to touch than a wooden spoon at the same room temperature?
 
Because they have different capacities of transporting heat.
 
Because wood is hotter than metal.
What happens to the energy of particles when a substance changes from a gas to a liquid?
 
It decreases a little.
 
It stays the same.
A puddle disappears on a sunny day because of
 
Evaporation.
 
Freezing.
How does a fan cool you down on a hot day?
 
It helps you to lose heat.
 
It accelerates the freezing process.
Higher temperature leads to higher kinetic energy.
 
True.
 
False.
Why does this make your hands feel warm?
 
The heat from the campfire is transferred to your hands.
 
Your hands release heat energy.
Can you explain why a balloon filled with air expands when placed in a hot environment?
 
The air particles in the balloon gain energy and move faster
 
The air particles in the balloon lose 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.
Describe the process of melting and what happens to particles when a solid becomes a liquid.
 
A solid turning into a liquid, and particles gain energy.
 
It's turning a gas into a solid. Particles slow down.
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.
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.
How does water change states when it boils? What happens to its particles?
 
They gain energy during boiling, and turn into a gas.
 
They slow down during boiling, and turn into a solid.
Select the difference between condensation and evaporation.
 
Condensation turns gas into liquids, not liquids into gas.
 
Condensation happens at 120°C, evaporation at 100° C.
When a liquid turns into a solid, it's called:
 
Freezing.
 
Evaporation.
 
Freezing.
 
Melting.
When a liquid turns into a gas, it's called:
 
Evaporation/vaporization.
 
Condensation.
 
Freezing.
 
Melting.
When a solid turns into a liquid, it's called:
 
Melting.
 
Freezing.
 
Condensation.
 
Evaporation.
Do particles move differently in different states of matter?
 
They move slower in solids than gases.
 
They move at a constant speed.
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.
How does increasing the temperature of a substance affect the speed of its particles?
 
Increasing temperature makes particles move faster.
 
Increasing temperature makes particles move slower
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.