Page 19 - FOUNDATIONS FOR LIFE; EXPLORING GOD’S UNIVERSE

Science Y6 – Materials and their Properties – lesson 1

MOHS SCALE FOR TESTING THE HARDNESS OF MATERIALS

Number Material Hardness
1 talc Very soft
2 gypsum
3 calcite
4 fluorite
5 apatite
6 orthoclase
7 quartz

8 topaz
9 corundum
10 diamond Very hard

1. Would apatite scratch a diamond? __________________

2. Would fluorite scratch gypsum? __________________

3. If a finger nail has a hardness of 2.5 would it scratch topaz? __________________

4. Name three minerals corundum would scratch. __________________

__________________ __________________

5. If a material will scratch orthoclase but not topaz what would its hardness be?
__________________

6. If a coin has a hardness of 2.5 would it scratch calcite?

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