1. Chapter 2
Properties of Matter

3. Pure Substance Matter that always has exactly the same composition
Elements- substances that cannot be broken down into simpler substances

4. Compounds
A compound is made from two or more elements in fixed proportions and can be broken down
Properties are different that those of the elements that make it up

5. Mixtures
Two or more elements or compounds mixed together. Each substance in the mixture retains its own set of chemical and physical properties
Properties of a mixture can vary because the composition of a mixture is not fixed
Examples; Sand, Salt water,

6. Types of Mixtures Homogeneous Heterogeneous
Parts of the mixture are evenly distributed that looks identical all over
Heterogeneous
Parts of the mixture are noticeably different from one another

7. Solutions, Suspensions, and Colloids
Based on the size of its largest particles, a mixture can be classified
Solution
Suspension
Colloid

8. Solutions
When substances dissolve and form a homogenous mixture, the mixture is called a solution
They do not separate into distinct layers over time
You can see through them
What are some examples???

9. Suspensions
A Suspension is a heterogeneous mixture that separates into layers over time.
Examples?
Oil and water, sand and water, muddy water
You can filter out the bigger particles

10. Colloids
A colloid contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension
Example:
Milk
Butter