1. Mixtures, Elements, and Compounds
Matter Chapter 3
Mixtures, Elements, and Compounds

2. Classifying Matter
Mixtures
Solutions
Elements
Compounds

3. Mixtures When two or more substances are mixed together.
The substances that make up a mixture can be in any amount.
Not chemically combined.
No new chemical substances have been formed.
Physical properties make it possible to separate mixtures. No chemical reactions are involved.

4. Mixtures are classified according to how “well mixed” they are.

5. Heterogeneous Mixtures
A mixture that does not appear to be the same color throughout. “least mixed”
The particles are large enough to be seen and easy to separate from the mixture.

6. Homogeneous Mixtures
A mixture that appears to be the same color throughout. “well mixed”
Particles are very small and not easily recognized. They do not separate while standing.

7. Colloids
The particles in a colloid are constantly bombarded by other particles in this mixture.
This makes colloids appear cloudy.
Look at page 64 figure 3-9

8. Solutions
Formed when one substance dissolves in another. “Best mixed”

9. Solute Solvent The substance that is being dissolved.
The substance that does the dissolving.

10. Insoluble Solubility Soluble A substance that dissolves in water.
A substance that does not dissolve in water.

11. Solubility
The amount of a solute that can be completely dissolved in a given amount of a solvent.
It is affected by several factors such as temperature.

12. Alloys
Metal solutions are called alloys.
Solids dissolved in solids.