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WorksheetsI. Intro. to Chem. and II. Minerals
Total questions: 40
Worksheet time: 20mins
Minerals that contain silicon and oxygen, and usually one or more other elements, are known as
native elements.
oxides.
silicates.
sulfides.
Define mineral. (Select all that apply.)
crystalline structure
inorganic
manmade
naturally-occurring
organic
True or false: Magma is molten rock on the surface of Earth.
True
False
True or false: Minerals can precipitate out of supersaturated solutions, or they can crystallize once the solution evaporates.
True
False
True or false: There are about 30 common minerals in Earth's crust.
True
False
True or false: Slowly cooling magma produces small crystals.
True
False
True or false: Coal is a mineral.
True
False
True or false: Silicates are the most common minerals on Earth.
True
False
True or false: Well-defined crystal shapes are rare.
True
False
__________ is the ability to break with arc-like, rough, or jagged edges.
Cleavage
Fracture
Hardness
Streak
__________ is the ability to split relatively easily along one or more flat planes.
Cleavage
Fracture
Hardness
Streak
__________ is the color of a mineral when it is broken up and powdered.
Cleavage
Fracture
Hardness
Streak
__________ is a measure of how easily a mineral can be scratched.
Cleavage
Fracture
Hardness
Streak
True or false: Specific gravity is the ratio of the weight of water to the weight of an equal volume of a substance at 4oC.
True
False
What special property can be used to help identify the mineral calcite?
A rotten-egg odor is produced during a streak test.
It exhibits iridescence.
It fizzes when it comes in to contact with hydrochloric acid (HCl).
It is naturally magnetic.
What special property can be used to help identify the mineral magnetite?
A rotten-egg odor is produced during a streak test.
It exhibits iridescence.
It fizzes when it comes in to contact with hydrochloric acid (HCl).
It is naturally magnetic.
A mineral with a metallic luster could be described as
pearly.
shiny.
silky.
waxy.
A silica tetrahedron (SiO4) contains ____ oxygen atoms.
1
2
3
4
Which of the following is an example of a native element mineral?
anhydrite (CaSO4)
copper (Cu)
halite (NaCl)
pyrite (FeS2)
The Mohs scale compares what property of minerals?
cleavage
color
density
hardness
Some varieties of the same mineral, such as rubies and sapphires, are different colors. What causes the different colors?
crystal shape
density
luster
impurities or trace elements
If you found a mineral sample consisting of large crystals, you could reasonably infer that it formed from which of the following types of magma?
magma that came into contact with seawater
magma that cooled on Earth's surface
magma that cooled quickly
magma that cooled slowly
If you found a mineral with a well-defined crystal shape, what could you reasonably infer about how it formed?
It formed in a restricted space.
It formed in an open space.
It formed very quickly.
It formed very slowly.
Which mineral is NOT found on Mohs scale?
apatite
diamond
graphite
quartz
A particle that has mass and a positive electrical charge is a(n)
electron.
neutron.
positron.
proton.
A(n) ___________ is a particle that has mass and is electrically-neutral.
electron.
neutron.
positron.
proton.
True or false: An atom is the smallest particle of an element that has all of the characteristics of that element.
True
False
True or false: An energy level is the area of an atom where an electron is most likely to be found.
True
False
True or false: The number of protons can differ from atom to atom in the same element.
True
False
True or false: Oxygen and silicon are the most abundant elements in the universe.
True
False
A(n) __________ is an attraction of two atoms for a shared pair of electrons that hold the atoms together.
acid
base
covalent bond
ionic bond
True or false: A compound is a substance that is composed of atoms of elements that are chemically combined.
True
False
A __________ consists of particles arranged in regular geometric patterns.
crystal
gas
glass
liquid
An element's atomic number represents
the number of protons in the atom’s nucleus.
the combined number of protons and neutrons in the atom’s nucleus.
the number of neutrons in the atom’s nucleus.
none of the above.
Which is the most abundant element in the Earth's crust?
hydrogen
iron
oxygen
silicon
Which is the most abundant element in the Earth's atmosphere?
argon
hydrogen
nitrogen
oxygen
Which is the most abundant metal in the Earth's crust?
aluminum
copper
iron
silver
True or false: An element's chemical symbol is always capitalized.
True
False
True or false: The periodic table is organized into 7 groups and 18 periods.
True
False
The mass of an atom is determined by its
electrons only.
protons and neutrons.
protons, neutrons, and electrons.
protons only.
