States of Matter
What are the three states of matter?
- solid
- liquid
- gas
What process changes a solid into a liquid?
In which state of matter do particles move the slowest?
Solid
Is cutting a piece of paper a physical or chemical change?
Physical change
What state of matter is the air we breathe?
Gas
Which state of matter has a definite shape and volume?
Solid
What happens when a liquid changes into a gas?
Evaporation
In which state of matter do particles move the fastest?
Gas
What type of change happens when you bake a cake?
Chemical change
Chemical change
What state of matter takes the shape of its container?
Liquid
What process happens when a gas cools down and turns into a liquid?
Condensation
What happens to particles when you heat up a liquid?
They move faster and spread apart
Is melting chocolate a physical or chemical change?
Physical change
Why do mirrors fog up after a hot shower?
Condensation -water vapor cools and turns back into liquid
What state of matter spreads out to fill any container and has no definite shape or volume?
Gas
You freeze it
What happens to particles when you cool down a gas?
They slow down and come closer together
What is the difference between a physical and a chemical change?
Chemical change = irreversible
Name something that exists in all three states of matter in nature.
Water
Solid = ice
Liquid = water
Gas = water vapor
True or false: Particles stop moving completely when frozen.
False: they still vibrate but very slowly!