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8th Chp 2 - Minerals
Gappa Earth: Chapter 2 - Minerals
| Question or Definition | Answer or Vocab Word |
|---|---|
| a rock with a definite chemical composition, is inorganic, is naturally occurring, has a crystal system and is solid | Mineral |
| comes from something that has never lived | inorganic |
| the way a mineral reflects light from its surface. | luster |
| a substance in which two or more types of atoms are chemically joined | compound |
| a substance that has is made up of all the same type of atoms | element |
| a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals | Mohs Hardness Scale |
| splits easily along flat surfaces | cleavage |
| describes how a mineral looks when it breaks apart in an irregular way | fracture |
| material that came from an organism that was once living | organic |
| What rating does a diamond have on the Mohs Hardness Scale? | 10 |
| What are the two ways minerals form? | crystallization of melted materials and materials dissolved in water |
| Why can't color alone be used to identify a mineral? | many minerals have the same color and the streak can help tell them apart |
| The words metallic, shiny and glassy can be used to describe a mineral's __________. | luster |
| The words cubic, tetragonal or hexagonal would be used to describe a mineral's _____________ ___________. | crystal system |
| What is equation for density? | mass divided by volume |
| If a mineral's cyrstals are small, then it cooled ________________. | quickly |
| If a mineral's crystals are large, then it cooled ________________. | slowly |
| It is necessary to add another substance to the ore at the beginning of the smelting process because it helps the useful material _____________ from the ore. | separate |
| What are the three types of mines? | open pit, strip, shaft |
| one who searches for ore deposits | prospectors |
| formed when two or more metals are combined to form a stronger metal | alloys |
| Alloys are useful because they are ___________ then the individual metals. | stronger |
| ability of a mineral to glow under ultraviolet light | fluorescence |
| a mineral's powder that is left behind when dragging the mineral on a piece of tile | streak |
| How would you find the volume of a rock? | 1. Fill a graduated cylinder. 2. Place the rock in the cylinder. 3. Record how many mL the water moved up. |
| Why do you have to use a graduated cylinder to find the volume of a rock? | because it has an irregular shape and you can't use a math formula |
| What is the math formula for volume? | length x width x height |
| How would you find the volume of a shoe box? | use the formula, length x width x height |
| When using a triple beam balance, in which order to you use the weights? | First - largest weight; Second - medium weight; Third - smallest weight |
| When using a triple beam balance, what do you do when the beam falls all the way down? | move the weight back one spot |
| What are the five characteristics necessary for a substance to be a mineral? | definite chemical composition, inorganic, naturally occuring, crystal pattern, solid |
| What test would you use to determine the hardness of a mineral? | scratch test |
| How would you determine the streak of a mineral? | drag the mineral across a porceline tile |
| Talc is the softest mineral. What would its hardness be on the Mohs Hardness Scale? | 1 |
| A diamond is the hardest mineral. What would its hardness be on the Mohs Hardness Scale? | 10 |
Created by:
edeboo
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