SCRATCH TEST Review
QUIZ: Friday, December 14th
Vocabulary to Know:
1. quartz – one of the hardest minerals
2. gypsum – one of the softest minerals
3. calcite – one of the most common minerals
4. fluorite – a mineral
5. hardness – the resistance to being scratched
6. mineral – a rock ingredient
Content to Know:
1. A mineral is a basic earth material that cannot be broken
down into smaller pieces.
2. It is usually necessary to know several properties of a
mineral to identify it.
3. Minerals are ingredients that make up rocks.
4. If you found two rocks and didn’t have any tools, you could
scratch them together to find out which rock is harder.
The one without the scratch is the harder one.
5. Hardness is a mineral property.
6. Hardness is the resistance to being scratched.
7. Minerals can be put in order by hardness.
8. A harder object always scratches a softer object.
9. Fluorite is a mineral found in toothpaste.
10.The following minerals are in order from softest to hardest:
Gypsum
Calcite
Fluorite
Quartz