Mohs Hardness Scale

1. Talc is one of the _______ minerals.

• Softest

• Hardest

2. What is the name of mineral #3?

• Feldspar

• Calcite

• Gold

• Fluorite

3. Did the penny streak the calcite?

• Yes

• No

4. Which is harder fluorite or copper?

• Copper

• Fluorite

5. How do you know this?

• I just know!

• Because it is softer.

• Because the Mohs scale is lower.

• Because it was used to scratch the penny.

6. What was used to scratch the fluorite?

• feldspar

• gold

• a blade

• fluorite

7. What was mineral #6?

• Feldspar

• Diamond

• Gold

• Silver

8. What was harder feldspar or the blade?

• The blade

• Feldspar

9. Why did quartz scratch the glass easier than feldspar?

• Because it is softer.

• Because it has a lower scale.

• Because it is harder.

• None of the above

10. What is the #10 mineral?

• Gold

• Feldspar

• Diamond

• Fluorite