Phases of Matter
How do the molecules move in a solid?
They move in place
What happens to molecules movement when you transfer energy in?
They move faster
What is the name for the phase change when a solid becomes a liquid?
Melting
Every substance has a certain level of _________ between its molecules that pulls the molecules toward each other
attraction
the way molecules in a substance move around relative to each other
Freedom of movement
How do the molecules move in a liquid?
They move around each other
What happens to molecules movement when you transfer energy out?
They move slower
What is the name for the phase change when a liquid becomes a solid?
Freezing
You have two substances, one with a strong and one with a weak attraction, and both are liquids right now. Which would you need to add less energy to get it to change to a gas?
The one with the weak attraction
the energy that an object has because it is moving
Kinetic energy
How do the molecules move in a gas?
The move apart from each other
If you increase the temperature what happens to molecules?
They move faster
What is the name for the phase change when a liquid becomes a gas?
Evaporation
You have two substances, one with a strong and one with a weak attraction, and both are liquids right now. Which would you need to remove less energy to get it to change to a solid?
The one with the strong attraction
a pull between two molecules that is always the same for a substance
Molecular attraction
What phase of matter is rigid and keeps its shape?
Solid
If you decrease the kinetic energy of molecules what happens to the movement?
They move slower
What is the name for the phase change when a gas becomes a liquid?
Condensation
If you are removing energy from two liquids, one that has a weak attraction and one with a strong attraction, which would change to a solid first?
The one with a strong attraction
the relative size of things
Scale
True or false: The molecules in a solid are moving.
True, they are moving in place
What happens to molecules kinetic energy when they move slower?
It decreases
If you transfer energy out of a liquid, what phase of matter will become?
Solid
If you are adding energy to two liquids, one that has a weak attraction and one with a strong attraction, which would change to a gas first?
The one with a weak attraction
a noticeably different form or state of the same substance
Phase