Grade 6 Unit 01: Chemicals Review
- 1. Know and define the properties of metals (malleable, ductile, good conductor, poor insulator, luster). Also know that metals are mostly solids.
- 2. Know and define the properties of nonmetals (brittle, dull, poor conductivity, good insulator). Many of the nonmetals are gases.
- 3. What two things flow easily through a good conductor? The opposite of a good conductor is a good ____________________.
- 4. Use the information in the pictures to calculate the density of the iron nails. Click on the images to get a larger image.
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- 5. Look at this table of densities of common substances. Do your results indicate the nails are made of iron? If you are not within 0.2 g/ml, you should look for mistakes in your measurements/calculations.
- 6. Use the
Mohs Hardness Scale to answer the following quesitons:
- a. Name two common objects that can scratch orthoclase.
- b. Name two minerals that fluorite can scratch.
- c. What is a possible hardness of a substance that is easily scratched by quartz, but cannot be scratched by a knife?
- d. Define mineral hardness.
- 7. What is a streak test? How can streak help identify a substance.
