Matter and Change
Mixtures
What are mixtures?
Physical blend between two or more components
Describing Matter
Extensive
Mass: Measure of amount of matter
Volume: Measure of amount of space
Intensive
Hardness = Type of matter
Chemical and Physical changes
Physical Changes
there is not a change in the composition
Chemical Changes
There is a change in the composition
Elements and compounds
Elements
Simplest form of matter that has an unique set of properties
example: oxygen hydrogen
Compounds
A substance that contains two or more elements chemically combined
States of matter
Solid
Liquid
Gas
Mixtures and substances
If the composition of the material is fixed the material is a substance. If the composition of a material may vary. The material is a mixture