NAME _____________________________________________
PERIOD ______
CODE # ______
TOPIC 2 - MINERALS, ROCKS AND RESOURCES - PAGES 24 - 40
1.
Define mineral .
2.
Define element .
An element is a substance made up of just one kind of atom .
3. Define compound .
A compound is a substance made up of two or more elements that are chemically combined to form a molecule .
4.
Define mixture .
A mixture is a substance in which different substances are present that are NOT chemically combined .
( Substances can be separated . )
5.
What is meant by a monomineralic rock ?
A rock composed of one mineral.
6.
What is meant by a polymineralic rock ?
A rock composed of many minerals.
7.
How many minerals have been identified ?
8.
How many minerals actually make up the majority of rocks found at the earth's surface ?
9.
What are the two most common elements found in the earth's crust ?
10.
How are minerals identified ?
11 What is meant by luster ?
12.
What is meant by streak ?
13.
What is meant by the term crystal ( structure ) ?
14.
How do you test for hardness ?
15.
What is meant by the Mohs' Scale of hardness ?
16. A piece of glass has a hardness of 5.5 . What does it mean if an unknown substance makes a scratch on the glass ?
Makes no scratch ?
17. What is the difference between cleavage and fracture ?