Minerals

Which of the following is the basic unit of matter?

• molecule
• chemical compound
• atom
• nucleus

Water is an example of a(n)

• atom
• molecule
• ion
• native element

An atom is only an ion if it has more or less

• neutrons than electrons
• protons than neutrons
• neutrons than protons
• electrons than protons

An example of a pure element is

• table salt
• silicon dioxide
• sulfur
• calcium carbonate

The crystal shape of a mineral

• shows how the atoms are arranged
• will always be the same if it is made from the same atoms
• can usually only be seen under a microscope
• can help account for how hard or brittle a mineral is

A molecule is the smallest unit of an element.

• TRUE
• FALSE

Protons and electrons are found in the nucleus of an atom.

• TRUE
• FALSE

Halides (salts) make up the largest group of minerals on Earth.

• TRUE
• FALSE

Coal and diamonds are different minerals because they have different structure.

• TRUE
• FALSE

In a crystal, the atoms are arranged in a pattern.

• TRUE
• FALSE