Minerals

Question 1

A mineral must be
A. Solid
B. Liquid

Answer 1

Solid

Question 2

A mineral must have 
A. Definite chemical composition
B. whatever composition it wants
C. A definite composition AND contain the same elements in the same properties
D. None of the above

Answer 2

The correct answer is C. Aminal must have a definite chemical composition and contains the same elements in the same properties

Question 3

A mineral must be..
A. Crystalline- formed from crystals
b- Rockalline- have rocks

Answer 3

A. A mineral must be Crystaline

Question 4

What is a crystal?

Answer 4

Crystals or solids who’s Adams are arranged a definite repeating pattern.

Question 5

What are the nine properties of a mineral

Answer 5

Hardness, color, specific gravity, crystal shape, streak, fracture or cleavage, luster, acid reaction, magnetism, florescence

Question 6

What is the difference between fracture and cleavage

Answer 6

Fracture: mineral breaks irregularly with no flat surfaces
Cleavage: mineral breaks into flat surfaces

Question 7

What is luster

Answer 7

Lester is a property of the mineral and is how the mineral reflects light

Question 8

What are the four categories of luster

Answer 8

Glassy, waxy, metallic, earthy

Question 9

What are minerals made of

Answer 9

Minerals are made of chemical elements. a chemical element is a substance made of one kind of atom

Question 10

How can you calculate specific gravity of a mineral

Answer 10

Find the mass of the mineral in the mass of the minerals when suspended in water. Divide the mass of the mineral by the mass of the mineral suspended in water

Question 11

How do you calculate the percentage error of specific gravity

Answer 11

Subtract the known specific gravity from your calculated specific gravity then divide this number by do you know the specific gravity I must put your new number by hundred
(ks- cs)/ks *100

Question 12

What are the two ways minerals are classified

Answer 12

Minerals are classified by

• their composition or chemical formula
• If they have similar structure or shape.

Question 13

What are silicates

Answer 13

Minerals containing silicon and oxygen

Question 14

What are carbonates

Answer 14

Minerals containing carbon and three oxygen atoms

Metal+co3

Question 15

What are sulfates

Answer 15

Minerals contain sulfur and four oxygens

Metal+so4

Question 16

What are oxides

Answer 16

Minerals containing a metal atom+o

Question 17

What are sulfites

Answer 17

Minerals containing a metal atom+s

Question 18

What are native elements

Answer 18

Minerals contain a single metal atom

Question 19

How do minerals form crystals

Answer 19

1. Crystilization: crystals form as magma cools

2. Precipitation: minerals dissolved in water form a solution: crystals form when water evaporates

Question 20

How does temperature affect crystal growth

Answer 20

The lower the temperature is the bigger the Crystal grows

Question 21

How does pressure affect Crystal growth

Answer 21

The more pressure the bigger the crystals

Question 22

A mineral must be…
A. Organic
B. Inorganic

Answer 22

Inorganic and cannot be formed from living things