1. Mohs scale is used to determine what property of minerals
a) cleavage b)density c)hardness d)luster
2. The tendency of minerals to break along smooth flat surfaces is called
a)fracture b)cleavage c)streak d) crystal form
3. What determines whether a mineral will show cleavage or break in irregular fractures?
a)hardness b)external shape c)internal atomic structure d)density