States of Matter
Which state of matter has a fixed shape and fixed volume?
Solid
When molecules move faster, does freedom of movement increase or decrease?
Freedom of movement increases
What can be added or removed to cause a phase change?
Energy
Solid → Liquid = ?
Melting
True or False
A substance can change phase without becoming a different substance.
True
Which state of matter can flow and take the shape of its container?
Liquid
Liquid → Gas
What happens to molecular movement?
Molecular movement increases
Slower particle motion means more or less energy?
Less energy
Gas → Liquid = ?
Condensation
A phase change is a:
A) Chemical change
B) Physical change
C) Nuclear change
D) Permanent change
B
Which state of matter has molecules that are far apart and move quickly?
Gas
What does molecular freedom of movement mean?
A. the way molecules in a substance move around relative to each other
B. substances are restricted in movement
C. Molecules are able to move less
D. creating energy
A
As temperature increases, what happens to energy?
Increases
Name one phase change that increases molecular motion.
Melting, Evaporation
True or False
During a phase change, the temperature always increases.
False
Water changes from molecules moving around each other to moving in place.
What phase change happened?
Freezing
During evaporation, molecules move ______ and ______.
faster, far apart
To change a solid into a liquid, energy must be ______.
Added
Water changes from liquid to gas.
What happens to the molecules?
The move faster and father apart
Which change is an example of a phase change?
A) Burning paper
B) Rusting metal
C) Ice melting
D) Cooking an egg
C
Match the state to its behavior:
1. Fixed shape → _____
2. Flows → _____
3. Spreads out → _____
1. Solid
2. Liquid
3. Gas
During condensation, molecules move ______ and ______.
Slower, Closer together
During a phase change, does temperature change?
(Yes or No)
Hint: Remember the graphs
No
Freezing happens when a ________ changes to a ________
Liquid changes to a solid
Name one example of a phase change you see in real life.
Hmmmmmmmmmmmmmm