Elements, Compounds, and Mixtures

Examples and Definitions

Pure Substances:

Matter that is only composed of only one type of substance.

Elements

A pure substance that cannot be separated into a simpler substance by physical or chemical means.

Examples:

-Hydrogen

-Oxygen

-Silicon

Compounds

A pure substance composed of two or more different elements joined by chemical bonds. Compounds can only be separated by chemical means, not physically.

Common Compounds:

- Water

- Salt

- Vinegar

Mixtures

A combination of two or more pure substances that are NOT chemically combined. Mixtures can be physically separated.

Examples of Mixtures:

- Jelly Beans

- Cake batter