rocks and minerals

Question 1

mineral

Answer 1

a naturally formed, inorganic solid that has a definite crystalline structure

Question 2

Rock

Answer 2

a naturally occurring solid mixture of one or more minerals or organic matter

Question 3

Element

Answer 3

A substance that cannot be separated or broken down into simpler substances by chemical means

Question 4

Compound

Answer 4

A substance made up of atoms of two or more different elements joined by chemical bonds

Question 5

Crystal

Answer 5

A solid whose atoms ions or molecules are arranged in a definite pattern

Question 6

Color

Answer 6

usually 1st characteristic noticed about a mineral, but generally not reliable

Question 7

Luster

Answer 7

The way in which a mineral reflects light

Question 8

Streak

Answer 8

The color of a powder of a mineral

Question 9

Cleavage

Answer 9

The splitting of a mineral along smooth flat surfaces

Question 10

Fracture

Answer 10

The manner in which a mineral breaks along either curved or irregular surfaces

Question 11

Density

Answer 11

The ratio of a mass of a substance to the volume of a substance

Question 12

ore

Answer 12

A natural mineral whose concentration of EconomicallyValuable minerals is high enough for the minerals to be mined profitable

Question 13

Metallic minerals

Answer 13

Have shinny surfaces, do not let light pass through

Question 14

Non-metallic minerals

Answer 14

have shinny or dull surfaces may let light pass through them

Question 15

Gemstones

Answer 15

non-Metallic minerals used for beauty

Question 16

Igneous rock

Answer 16

formed when hot, liquid rock colls and solidifies

Question 17

Sedimentary rock

Answer 17

when rock or minerals, called clasts are cemented together

Question 18

Metamorphic rock

Answer 18

occurs when temperature and pressure inside the earth’s crust change