Exam 2: Matter and Minerals

Which of the following minerals is not a chemical compound?

Which of the following is not a criterion for defining something as a mineral?

Which of the following is a mineral as defined by a geologist?

The Octet rule states that atoms tend to gain,lose,or share electrons until they are surrounded by six valence electrons.

Dolomite is a magnesium-rich member of the ________ group.

Which of the following best defines a mineral and a rock?

An element is defined by the number of electrons the orbit the nucleus.

Diamond and quartz are both minerals composed of a single element.

Which electrons are responsible for most chemical bonding?

Silicon-oxygen bonds are weak and cause cleavage to be common in silicate minerals.

Halides always include ________.

Most minerals have a higher specific gravity than water.

All atoms of the same element have the same atomic number.

A minerals luster is produced by its ability to transmit light.Opaque minerals always have a metallic luster because they do not transmit any light.

The atomic particle that carries a positive charge is called a(n)________.

Which two elements combine to make most of the common rock forming minerals in the crust?

Metals are good conductors of electricity because their protons can roam freely throughout the material.

When Calcium (Ca)bonds with oxygen,it gives up two electrons.What is the charge of the Ca ion in this compound?

An atom with 30 protons always has 30 neutrons and 30 electrons.

The mass of an atom comes from its electrons.