Name ______Date ______Hour ______
Mineral Review
True/False
Indicate whether the statement is true or false.
____ 1. Minerals can form from the cooling of magma.
____ 2. If magma cools slowly, atoms do not have time to arrange themselves into large crystals.
____ 3. Small crystals form from rapidly cooling magma.
____ 4. Minerals can form from elements dissolved in a solution.
____ 5. If a solution remains unsaturated, mineral crystals may precipitate.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 6. A mineral CANNOT be
a. / solid. / c. / naturally occurring.b. / formed from once-living material. / d. / light in color.
____ 7. Which of the following is NOT a property of minerals?
a. / luster / c. / ageb. / odor / d. / hardness
____ 8. If a mineral breaks along flat or even surfaces, it has
a. / luster. / c. / cleavage.b. / fracture. / d. / streak.
____ 9. Identification tests for minerals are based on their
a. / scientific names. / c. / value as ores.b. / physical and chemical properties. / d. / value as gems.
____ 10. A mineral’s hardness with respect to other minerals can be determined by
a. / its specific gravity. / c. / the Mohs scale of mineral hardness.b. / its cleavage planes. / d. / its magnetic properties.
____ 11. Minerals, such as quartz, that break along jagged edges are said to have
a. / cleavage. / c. / fracture.b. / density. / d. / special properties.
____ 12. Minerals always exist in a(n) ____ form.
a. / liquid / c. / solidb. / gaseous / d. / organic
____ 13. Silver, gold, and copper have shiny surfaces and thus are said to have ____.
a. / dull luster / c. / waxy lusterb. / metallic luster / d. / nonmetallic luster
____ 14. In double refraction, light is
a. / bent in two directions.b. / bent in one direction.
c. / obscured by gas bubbles in the crystal.
d. / changed to a magnetic field.
____ 15. Minerals form from bodies of water due to the process of ____.
a. / condensation / c. / meltingb. / precipitation / d. / cooling
____ 16. Which of the following properties is generally the least useful in identifying minerals?
a. / hardness / c. / cleavageb. / streak / d. / color
____ 17. The color of a mineral, such as fluorite, changes due to ____.
a. / small amounts of trace elementsb. / differences in the hardness
c. / differences in the crystal structure
d. / differences in the density
____ 18. The resistance of a mineral to being scratched is called ____.
a. / streak / c. / hardnessb. / fracture / d. / cleavage
____ 19. The color of the powdered form of a mineral is called ____.
a. / cleavage / c. / lusterb. / streak / d. / fracture
____ 20. Mohs scale is used to determine what property of minerals?
a. / cleavage / c. / hardnessb. / density / d. / luster
____ 21. The tendency of minerals to break along smooth flat surfaces is called ____.
a. / fracture / c. / streakb. / cleavage / d. / crystal form
____ 22. What is the uneven breakage of a mineral called?
a. / fracture / c. / crystal formb. / cleavage / d. / hardness
Completion
Complete each statement.
23. The way a mineral reflects light from its surface is called ______, which is described as metallic or nonmetallic.
24. How a mineral feels to the touch is called ______.
25. A mineral’s ______is the color of a mineral when it is broken up and powdered.
26. A measure of how easily a mineral can be scratched is called ______.
27. Another property describes how a mineral will break. If a mineral splits easily and evenly along one or more planes, it has the property of ______, while minerals that break along jagged edges are said to have ______.
28. The odor of rotten eggs in the streak of a mineral indicates that it contains ______.
29. Small amounts of different elements in the same mineral can change the ______of the mineral.
30. When minerals form slowly without space restrictions, they will develop ______.
Short Answer
31. What is a mineral?
32. Why is salt classified as a mineral, but sugar is not?
33. What is a crystal?