States of Matter
What are the three main states of matter?
Solid, liquid, gas
What is the process of a solid changing into a liquid called?
Cutting paper is what type of change?
Physical
Which state of matter has a definite shape and definite volume?
Solid
Evaporation
Burning wood is what type of change?
Chemical
Which state of matter takes both the shape and volume of its container?
Gas
What is it called when gas turns back into a liquid?
Condensation
What is one sign that a chemical change has occured?
color change, gas produced, heat, light
What happens to particle movement as matter gets colder?
Slows down
What happens during freezing?
A liquid becomes a solid
Why is melting ice considered a physical change?
No new substance forms (it's still water)
What state of matter has particles that move freely and are spread far apart?
Gas
What is the term for a solid turning directly into a gas without becoming a liquid first?
Sublimation
What happens to the molecules during a chemical change?
They rearrange to form a new substance.