Use this worksheet to work through sections B.1 and B.2 Complete the assignment on your own paper. Please remember to write your answers IN COMPLETE SENTENCES.
B.1: Physical Properties of Water
1. Why is water considered one of the rarest substances in the universe?
2. What are physical properties?
3. The book states that water is the only ordinary liquid found naturally in the environment. Can you think of any others? What are they?
Are you writing in complete sentences??
4. Why is "pure" water not really pure? What about distilled water?
5. What are the 4 characteristics of "pure" water?
6. What is density?
7. What is the density of water (include the correct units)? How is this determined?
8. How are the densities of the gaseous and solid forms of a substances related to it's liquid form?
9. How is water an exception to the above stated relationship?
Are you writing in complete sentences??
10. Why is this important to aquatic life? How does it explain some erosion problems?
11. What is the boiling point of water in degrees Celsius? Freezing point?
12. What is the boiling point of water in degrees Fahrenheit? Freezing point?
13. Compare and contrast evaporation and boiling.
14. What does high surface tension cause water to do?
B.2: Mixtures and Solutions
1. Define mixture.
2. Compare and contrast heterogeneous and homogeneous mixtures.
3. What is another name for homogeneous mixture?
4. Compare and contrast solute and solvent.
5. What are suspensions? Are they heterogeneous or homogeneous? Cite one example.
6. What is a colloid? Cite one example.
7. What is the Tyndall effect and what is it used for?
8. How did your "foul water" sample illustrate all three types of mixtures (solution, suspension, colloid)?