iClicker exam 3

Question 1

Which of the following pairs of intrusive and extrusive rocks have the same chemical composition?

Answer 1

gabbro and basalt

Question 2

Which of the following types of igneous rocks crystallizes deep within Earth’s crust?

Answer 2

Gabbro

Question 3

Which of the following best describes a rhyolite?

Answer 3

Fine-grained igneous rock rich in sialic minerals

Question 4

Andesite is an example of a(n) __________ igneous rock.

Answer 4

intermediate

Question 5

Which group of silicate minerals has the highest Silicon to Oxygen ratio?

Answer 5

Framework silicates

Question 6

Which group of silicate minerals has the lowest Silicon to Oxygen ratio?

Answer 6

Island Silicates

Question 7

What is molten rock beneath Earth’s surface called?

Answer 7

Magma

Question 8

Which mineral crystallizes from a magma at the lowest temperature?

Answer 8

Quartz

Question 9

Which mineral is common in both sialic/felsic and mafic igenous rocks?

Answer 9

Plagioclase feldspar

Question 10

The classification of igenous rocks is dependent on texture and:

Answer 10

the minerals present

Question 11

Sodium has an atomic number of 11. How many electrons will the sodium ion Na+ have?

Answer 11

10

Question 12

What will be the charge of an atom containing eight protons, nine neutrons, and 10 electrons?

Answer 12

-2

Question 13

Which type of bonding do atoms transfer one or more electrons?

Answer 13

Ionic

Question 14

Most common rock-forming minerals are:

Answer 14

Silicates

Question 15

The two most common elements in the Earth’s crust are:

Answer 15

oxygen and silicon