Earth Materials and Resources: Physical and Chemical Properties

Question 1

Derived and extracted from nature

Answer 1

Minerals

Question 2

Overall shape or growth pattern (features)

Answer 2

Crystal habitat

Question 3

3 types of crystal habit

Answer 3

Equant - 3D shape same length of cube or sphere
Elongate - forms prism
Platy - flattened and thin crystal

Question 4

appearance of a mineral when light is reflected

Answer 4

Luster

Question 5

2 types of Luster

Answer 5

Metallic luster - opaque and very reflective like gold and silver
Non metallic luster - dull, silky, greasy, and pearly like silicates

Question 6

Tendency of minerals to break along very smooth, flat and shiny surfaces

Answer 6

Cleavage and fracture

Question 7

measure of the mineral’s resistance to scratching

Answer 7

Hardness

Question 8

most obvious but not reliable

Answer 8

color

Question 9

color of the mineral in powdered form

Answer 9

streak

Question 10

naturally occuring in nature in an uncombined form

Answer 10

Native Elements

Question 11

largest group of minerals

Answer 11

Silicates

Question 12

combination of metal with oxygen

Answer 12

Oxides

Question 13

compounds of sulfur

Answer 13

sulfides

Question 14

compounds of sulfur, metals, and oxygen

Answer 14

Sulfates

Question 15

from halogen elements, and are soft and easily dissolved in water

Answer 15

Halides

Question 16

Made of carbon, oxygen, and a metallic element

Answer 16

Carbonates

Question 17

formed when other minerals broken down from withering

Answer 17

phosphates

Question 18

substances that do not fit nearly into the 8 classes

Answer 18

Mineraloid