1. Compounds and Mixtures

2. Substances
Pure Substance- Matter that has the same composition and properties throughout.
(made of same atoms or molecules)
Compound- Substance whose smallest unit is made up of atoms of more than one element bonded together.
Often have properties that are different from the elements that make them up.

3. Mixtures
Mixture- When two or more substances (elements or compounds) come together but don’t combine to make a new substance.
Proportions of the substances in a mixture can be changed without changing the identity of the mixture.

4. Mixtures Homogeneous- Same throughout. Cannot see the different parts.
Ex: Brass, sweet tea, kool-aid
Heterogeneous- Has larger parts that are different from each other.
Ex: Pepperoni and mushroom Pizza, toy box filled with toys

5. Solutions Well-mixed mixture that contains a solvent and a solute.
Solvent- the part of the solution that represents the majority. It dissolves the solute.
Solute- smaller amount, dissolved by solvent.

6. Solutions Colloid- a mixture with tiny particles undissolved. Ex- milk
Suspension- mixture with larger particles undissolved
Ex- snow globe or pulpy orange juice