Elements
1. Cannot be seperated into any other substance
2. Has a unique set of properties
3. Smallest unit of an element is the atom
Compounds
1. Two or more element chemically combined
2. Individual elements have different properties in compound form
3. Compounds always has same components in same proportions
Mixtures
1. Combination of two or more substance in any proportion
2. Substances are not chemically combined
3. Substances keep original properties
4. Can be easily separated
1.Pure substances
2. Can exist as molecules (oxygen and water)
1.Simple mixtures are made of two elements
1. Both made of more than one element
1.All are made from atoms, the building blocks of matter
