1. Several solids, liquids, and gases can be found in your home. List three examples of each.

2. What states of matter exist within the human body? What state of matter do you think your body is mostly made up of? Why?

3. Your blood contains many dissolved solids. What do you think could be done if you needed to remove the water from a sample of blood in order to study the solids that remained?

4. Your body contains a considerable amount of dissolved metal ions. Based on what you know about food and nutrition, list at least three metals that you think could be found within the human body?