1. Most minerals are composed of two or more elements joined to form a chemically stable ______________.

2. The orderly internal arrangement of atoms which make up a mineral is reflected in the regularly-shaped objects we call ____________________.

3. The hardest naturally occurring mineral is ____________________.

4. When a mineral breaks into smooth curved surfaces, it is said to exhibit _________________ fracture.

5. Mohs scale is used to describe which mineral property? _____________________

6. The tendency of a mineral to break along flat planes of weak bonding is called ____________________.

7. The color of a mineral in a powdered form is known as ____________________.

8. When minerals are permitted to form without space restrictions, they will develop ___________________.

9. An aggregate of one or more minerals is called a(n) ____________________.

10. The _________________ is the smallest part of matter that still retains the characteristics of an element.

11. The central region of an atom is known as the ______________________.

12. List the two most abundant elements found in the Earth’s crust. ______________________.

13. What mineral is used to help make glass? ______________________

14. About how many common minerals are there? ______________________

15. The name given to electrically charged atoms is _____________________.

16. The 2 elements that make up the mineral halite are _____________________.

17. The 2 elements that make up the mineral quartz are _____________________.

18. The way that minerals reflect light is called _____________________.

19. (T/F) The discovery of gold in Jan. 1848 at Sutter's Mill by James Marshall started the Great California Gold Rush.

20. Rocks that contain economically viable concentrations of minerals are called _____________________.

21. About what percentage of all minerals are the silicates? ______________________