Earth Science Help Please !?

C

Corona

New member
1. All minerals in the sulfate and sulfide groups contain what element?
silicon
sulfur
oxygen
carbon

2. To which mineral group does orthoclase feldspar (KAlSi3O8) belong?
the oxides
the carbonates
the silicates
the halides

3. The resistance of a mineral to being scratched is called _____.
streak
fracture
hardness
cleavage

4. The tendency of minerals to break along smooth flat surfaces is called _____.
fracture
cleavage
streak
crystal form

5. How could you determine if a sample of gold is pure?
Compare the sample's density with that of pure gold.
Compare the sample's color with that of pure gold.
Determine whether the sample is magnetic.
Determine whether the sample will fizz in contact with hydrochloric acid.
 
Congrats to Agena she is the only answerer to get them all correct.

Good Job!

To keep my answer within CG I would answer the way Agena has.
 
1 Sulfur
2 I don't know but I have a strong feeling its Silcate
3 streak
4 fracture
5 Determine whether the sample is magnetic.
 
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