1
.
____________________
is
a
building
material
made
of
sand
and
gravel
.
2
.
The
way
a
mineral
reflects
light
is
known
as
____________________
.
3
.
A
measure
of
how
easily
a
mineral
can
be
scratched
is
its
____________________
.
4
.
The
way
a
mineral
splits
is
a
property
called
____________________
.
5
.
Metals
can
be
removed
from
minerals
by
a
process
called
____________________
.
