Question

Write the term that best completes the statement. Each term will be used once.

cleavage crystal fracture hardness
luster magma inorganic silicates
specific gravity streak
A mineral, such as salt, is naturally occurring but
, in contrast to sugar, which comes from plants.
A solid in which the atoms are arranged in a repeating pattern is a
.
make up the most common mineral group.
When compounds in cooling
no longer move freely, they may interact chemically to form minerals.
is described as either metallic or nonmetallic.
A mineral’s
rarely changes, but sometimes does not match its external color.
Mohs scale is used to compare the
of minerals.
Mica has perfect
in one direction; it breaks in sheets.
When flint and opals break, they have a unique
with arclike patterns.
Geologists commonly use
as a measure of density for accurate identification of a mineral.

Answer 1

1. inorganic
2. crystal
3. silicates
4. magma
5. luster
6. streak
7. hardness
8. cleavage
9. fracture
10. specific gravity