Exam 2: Minerals: The Building Blocks of Rocks

Calcite and halite react with dilute acids to evolve carbon dioxide.

Based on the brief discussion of chemistry and chemical bonding, why do minerals rarely exhibit pure chemical compositions (100% always the same chemical composition)?

What is the chemical composition of graphite and diamond?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

Amethyst, chalcedony, and citrine are gemstone varieties of this common mineral.

When two or more elements combine to form a mineral, they do so in definite proportions represented by a simple chemical formula for that ________.

Which is not a requirement? To be a mineral it must be or have ________.

Oxygen ions are larger in size than silicon ions.

Most of the elements in the periodic table are metals.

Which carbonate mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?

The strong tendency of certain minerals to break along smooth, parallel planes is known as ________.

Pyrrhotite (iron sulphide)is the only mineral to exhibit natural magnetism.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

As silicate tetrahedra link together in larger units, more oxygens are shared and the size of the negative charge per silicon decreases.

In a silicon-oxygen structural unit, silicon atoms occupy corners of a tetrahedron.

The electrons in the outermost shell of an element are referred to as ________.

Where can one view a list of known elements?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

The external expression of the internal arrangement of atoms in a mineral is called what?

Name a common carbonate mineral.