1. Explain why Brownian motion provides evidence for the existence of atoms and molecules.

2. Describe the Difference between elements, compounds, and mixtures.

3. Which would be easier to separate, a mixture or a compound? Explain your answer.

4. Give an example of each: element, compound and mixture.

5. Identify each of the following as element, compound, homogeneous mixture, or heterogeneous mixture. Explain your answer
a. Milk
b. Iron Nail
c. Glass
d. Sugar
e. Bottled Spring Water
f. Distilled Water
g. Air
h. Alloy bicycle frame
i. Propane
j. Baking Soda

6. Most things you use every day are
a. Compounds
b. Elements
c. Mixtures

7. Your teacher has mixed salt, pepper, and water. Describe a procedure that you could use to separate this mixture. Be sure to list all of the materials you would need, your set up and your expected results.