The amount of matter in an object
What is mass
A _______ is a state of matter with a fixed volume but no fixed shape.
What is a liquid?
The temperature at which a liquid becomes a gas is called that liquid's ...
boiling point
smallest basic unit of matter
when we mention "particles" we are talking them.
What is an ATOM
A _______ is a state of matter with a fixed shape and volume.
What is solid?

What are the 3 states in the PICTURE above
Solid , Liquid , Gas
temperature at which a substance changes from a liquid to a solid is called what ?
What is freezing point?
wood burning turns to ash is what type of change?
Chemical change
A characteristic of a substance that can be observed or measured without changing its composition
What is physical property?
Density describes the relationship between ____ and ____.
mass and volume
TRUE OR FALSE
A liquid has a definite volume and has a definite shape.
FALSE
A liquid has a definite volume but DOES NOT have a definite shape.
What happens to the particles of matter as they change from a liquid to a solid?
As the particles cool they be come less active and move closer.
what is a molecule?
when two or more atoms bond together or combine
example H2O
Is Reactivity with acid a chemical or physical property?
Chemical
Physical and chemical characteristics of matter used to describe or identify a substance are called...
Properties
The temperature at which a substance changes from a solid to liquid
What is melting point?
A change in matter from one form to another is called a _______________
A state of matter that has no fixed shape or volume
Gas
A measure of the amount of matter present in a given volume of substance.
Density