1. The Properties of Matter Chapter 2 Section Reviews (pg 41 #1-3, pg 46 #1-4, pg 51 #1-3)

2. pg 42 #1-3 1. What are the two properties of all matter? All matter has mass and volume. 2. How is volume measured? How is mass measured? Volumes of liquids are measured with graduated cylinders and are expressed in liters and milliliters (solids are measured in cm 3 ). Mass is measured with a balance and is expressed in kilograms, grams, and milligrams.

3. pg 42 #1-3 3. Do objects with large masses always have large weights? Not all objects with large masses have large weights because the weight of an object can change depending on where it is located in the universe.

4. pg 46 #1-4 1. List three physical properties of water. Water is colorless, is liquid at room temperature, has a density of 1.00g/mL, is odorless, has a melting point of 0°C, has a boiling point of 100°C, and can dissolve table salt and sugar.

5. pg 46 #1-4 2. Why does a golf ball feel heavier than a table-tennis ball? A golf ball feels heavier than a table- tennis ball because it is more dense; that is, it has more mass in a similar volume.

6. pg 46 #1-4 3. Describe how you can determine the relative densities of liquids. Ex: Pour the liquids into a container, and allow the container to stand undisturbed. The liquids will form layers with the least dense liquid on top and the densest liquid on the bottom.

7. pg 46 #1-4 4. How could you determine that a coin is not pure silver? Measure the mass and volume of the coin. Calculate the coin’s density. Compare this density with the known density of silver.

8. pg 51 #1-3 1. Classify each of the following properties as either physical or chemical: reacts with water, dissolves in acetone, is blue does not react with hydrogen. Reacts with water: chemical; Dissolves in acetone: physical; Is blue: physical; Does not react with hydrogen: chemical

9. pg 51 #1-3 2. List three clues that indicate a chemical change might be taking place. Color change; bubbling; fizzing or foaming; heat; and the production of light, sound or odor.

10. pg 51 #1-3 3. Describe the difference between physical changes and chemical changes in terms of what happens to the matter involved in each kind of change. In a physical change, material does not change its identity. In a chemical change, the initial matter changes its identity and becomes a new form of matter with a different identity and properties.