Jess scratches an unknown mineral with topaz, which has a Mohs hardness of 8. Topaz leaves a scratch on the unknown mineral. The unknown mineral _____.
is softer than topaz
is softer than diamond
is harder than diamond
is harder than topaz
has a Mohs hardness of 10
1 answer
The correct answers are:
Since topaz scratches the unknown mineral, the unknown mineral must be softer than topaz (Mohs hardness of 8). Thus, it is also softer than diamond (Mohs hardness of 10). The remaining options do not apply.
1 answer
1 answer
2 answers
1 answer