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Multiple Choice Quiz
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1
Which of the following is NOT a type of silicate structure?
A)loop silicate
B)double chain silicate
C)single-chain silicate
D)sheet silicate
2
Which of the following are true for a mineral.
A)It is inorganic.
B)It is a solid crystalline substance.
C)It is naturally occurring.
D)All of these are properties of a mineral.
3
The silicon-oxygen tetrahedron is:
A)the building block of the silicate minerals.
B)composed of 4 oxygen atoms surrounding 1 silicon atom.
C)composed of the two most abundant elements on Earth.
D)all of these
4
The mineral, olivine, is an example of:
A)a double-chain silicate structure
B)a sheet silicate structure
C)a framework silicate structure
D)an isolated silicate structure
5
What type of bonding occurs between sodium (Na+2) and chlorine (Cl-2) in the mineral halite?
A)covalent
B)weak electrostatic bonds
C)metallic
D)ionic
6
Coal is a rock and not a mineral because:
A)it contains only one element: carbon
B)it is made of partially decomposed organic matter
C)it is too soft to be a mineral
D)it does not have cleavage
7
Atoms with either a positive or negative charge are called:
A)radioactive
B)elements
C)ions
D)isotopes
8
The type of bonding where electrons in the outer shell of an atom are shared with the adjacent atom:
A)ionic
B)weak electrostatic bonds
C)metallic
D)covalent
9
A unit of matter which cannot be broken down into other substances by ordinary chemical methods is:
A)an element
B)an atom
C)a molecule
D)a mineral
10
Which of the following is true of a single silica tetrahedron?
A)It has a net negative charge.
B)It has one silicon atom and four oxygen atoms.
C)The atoms of the tetrahedron are strongly bonded together.
D)All of these are true of a single silica tetrahedron.
11
The ability of a mineral to break along preferred planes is called:
A)brittleness
B)hardness
C)fracture
D)cleavage
12
Which of the following are minerals?
A)all of the choices below are minerals.
B)calcite
C)quartz
D)salt
13
Oxygen accounts for what percent by weight (approximately) of all matter in Earth's crust?
A)12%
B)24%
C)36%
D)47%
14
Amphibole is:
A)a sheet silicate
B)a single chain silicate
C)a framework silicate
D)a double chain silicate
15
Protons are sub-atomic particles:
A)which orbit around the nucleus of the atom.
B)with a positive electrical charge.
C)with a negative electrical charge.
D)with variable atomic mass.
16
An ion with a surplus of electrons is:
A)an isotope.
B)neutral.
C)positively charged.
D)negatively charged.
17
Stable isotopes are elements that:
A)have variable numbers of protons.
B)do not lose protons and neutrons over time.
C)are radioactive.
D)none of these.
18
Which of the following mineral pairs are not polymorphs??
A)calcite and aragonite
B)diamond and graphite
C)fosterite and fayalite
19
The most common group of minerals are the:
A)sulfides
B)silicates
C)oxides
D)carbonates
20
Atoms become ions when they:
A)gain or lose mass.
B)gain or lose neutrons.
C)gain or lose protons.
D)gain or lose electrons.





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