Anything that has mass and takes up space.
1) Single type of matter that is pure.
2) Composition is always the same.
Ex. Salt, sugar, water
Definition: characteristics of a substance that
can be observed without changing it to
something else.
Ex. 1. Hardness
2. Smell
3. Color
4. Solid
5. Liquid
6. Gas
7. Density
8. Mass
9. Volume
Definition: when a substance has changed into
something new or different so that the original
substance is gone.
Ex. 1. Burning -combustion
2. Rusting
3. Rising bread
4. Cooking eggs