GEL111_Week 1_Quiz 1

Which mineral is easily soluble in water at room temperature? 1. Halite 2. Olivine 3. Diamond 4. Talc

1. Halite

In the silicon-oxygen tetrahedron, there are more silicon atoms than oxygen atoms. True or False

False

Mineral luster is broadly classified as either being metallic or opaque. True or False

False

Which one of the following mineral groups exhibits a sheet-like silicate structure? 1. Carbonates 2. Micas 3. Feldspars 4. Pyroxenes

2. Micas

Atoms of the same element, zinc, for example, have the same number of _____. 1. Electrons in the nucleus 2. Protons in the nucleus 3. Electrons in the valence bond level 4. Neutrons in the outer nuclear shell

2. Protons in the nucleus

Which group of minerals are the most abundant in the Earth's crust? 1. Sulfides 2. Silicates 3. Carbonates 4. Halides

2. Silicates

Which one of the following is NOT true for minerals? 1. They have a specific, internal, crystalline structure. 2. They can be liquid, solid, or glass. 3. They can have a specific, predictable chemical composition. 4. They can be identified by characteristic physical properties.

2. They can be a liquid, solid, or glass.

Which of the following denotes the positively charged particles in an atom's nucleus? 1. Neutrons 2. Isotrons 3. Protons 4. Electrons

3. Protons

Which common mineral is composed entirely of silicon and oxygen? 1. Diamond 2. Calcite 3. Quartz 4. Olivine

3. Quartz

All silicate minerals contain which two elements? 1. iron, silicon 2. oxygen, carbon 3. silicon, oxygen 4. silicon, sodium

3. silicon, oxygen

An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus? 1) 19 2) 13 3) 6 4) 7

4) 7

Which of the following best defines a mineral and a rock? 1. A rock has an orderly, repetitive, geometrical, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks. 2. A mineral consists of its constituent atoms arranged in a geometrically repetitive structure; in a rock, the atoms are randomly bonded without any geometric pattern. 3. A rock consists of atoms bonded in a regular, geometrically predictable arrangement; a mineral is a consolidated aggregate of different rock particles. 4. In a mineral constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of different mineral grains.

4. In a mineral constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of different mineral grains.

The strong tendency of certain minerals to break along smooth, parallel planes is known as _____. 1. cracking luster 2. streak 3. crystal form 4. cleavage

4. cleavage

What mineral is the hardest known substance in nature? 1. Native gold 2. Silicate 3. Diamond 4. Muscovite

Diamond

Which of the following is NOT one of the eight most common elements in Earth's crust? 1. Calcium 2. Potassium 3. Carbon 4. Aluminum

Carbon (?)

All minerals exhibit cleavage. True or False

False

All atoms of the same element have the same atomic number. True or False

True

Electrically neutral atoms have equal numbers of electrons and protons. True or False

True

Rocks are aggregates of one or more minerals. True or False

True

The micas, biotite and muscovite, both exhibit one direction of cleavage. True or False

True