Pure Substance: Substances which have fixed a definite composition.
- Elements: Fundemental substances from which all matter are made.
- Examples: Oxygen, Carbon, Silver, Iron
- Compounds: Contain 2 or more elements combined in fixed proportions.
- Examples: Water, Table Salt, Sugar
Mixtures: Substances with varying compositions.
- Homogeneous Mixtures: Solutions which have uniform compositions & appearance throughout.
- Examples: Sugar in water, 10K gold, gas, air
- Heterogeneous Mixtures: Mixtures which do not have uniform properties througout.
- Examples: Dirt, Raisin Bread, Smarties, Fried Rice,