Which two minerals are commercial sources of iron?

muscovite mica and biotite mica

Silicate minerals contain the elements silicon and oxygen. Which list contains only silicate materials

potassium feldspar, quartz, and amphibole

graphite, talc, and selenite gypsum

calcite, dolomite, and pyroxene

biotite mica, fluorite, and garnet

What is the best way to determine if a mineral sample is calcite or quartz?

Place a drop of acid on the mineral.

Observe the color of the mineral.

Place the mineral near a magnet.

Measure the mass of the mineral.

Although diamonds and graphite both consist of the element carbon, their physical properties are very different. The most likely explanation for these differences is that

the internal arrangement of carbon atoms is different in each mineral

graphite contains impurities not found in diamonds

graphite contains radioactive carbon-14 but diamonds do not

diamonds contain silicate tetrahedra but graphite does not

Two minerals made of pure carbon are diamond and graphite. Which statement best explains why diamond is so much more resistant to scratching than graphite

The atoms are bonded together more strongly in diamond than in graphite.

The atoms are lighter in graphite than in diamond.

The atoms are heavier in graphite than in diamond.

The atoms are smaller in graphite than in diamond.

This property is most closely related to the

arrangement of atoms in the mineral

impurities found in the mineral

The data table provides evidence that

a few elements are found in many minerals

the same elements are found in all minerals

all elements are found in only a few minerals

all elements are found in all minerals

Quartz and halite have different crystal shapes primarily because

The internal arrangement of atom

Light reflects from crystal surfaces

Energy is released during crystallization

Of impurities that produce surface variations

Which of the following is not a requirement for an object to be classified as a mineral?

it must break along even patterns

it must have a definite chemical composition

Different arrangements of tetrahedra in the silicate group of minerals result in differences in the minerals

hardness, cleavage, and crystal shape

chemical composition, size, and origin

The five characteristics that all minerals share are:

Definite Chemical Composition, Crystal Structure, Inorganic, Naturally Occurring, and Solid

Definite Chemical Composition, Color, Density, Igneous, and Solid

Cleavage, Faces, Hardness, Metamorphic, and Streak

Cleavage, Crystal Structure, Density, Igneous, and Solid

size & shape of a rock's mineral grains

the minerals a rock is made up of

Minerals and Earth

Authored by Charles Martinez

Science

8th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Most of the common rock-forming minerals belong to a group called the what?

silicates

elements

oxygen

halites

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two most abundant elements in Earth’s crust.

Iron and Calcium

Sodium and Oxygen

Potassium and Magnesium

Oxygen and Silicon

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The resistance of a mineral to being scratched

hardness

streak

cleavage

fracture

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The way a mineral reflects light.

luster

streak

cleavage

fracture

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The color of a mineral in its powdered form.

streak

luster

gold

brown

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Minerals that break along smooth, flat surfaces.

cleavage

fracture

streak

luster

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Minerals that break on rough, jagged, uneven surfaces.

streak

fracture

splinter

cleavage

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Minerals and Earth

Most of the common rock-forming minerals belong to a group called the what?

What are the two most abundant elements in Earth’s crust.

The resistance of a mineral to being scratched

The way a mineral reflects light.

The color of a mineral in its powdered form.

Minerals that break along smooth, flat surfaces.

Minerals that break on rough, jagged, uneven surfaces.

What mineral is attracted to magnets?

Which two minerals are commercial sources of iron?

Which element, found in both biotite mica and muscovite mica, makes up the greatest percent by volume of Earth's crust?

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