Question

the main mineral making up your teeth is the mineral apatite. according to mohs hardness scale, apatite has a hardness of 5. question 37 lets say that some tube of toothpaste contains silica (quartz). quartz has a hardness of 7. which is harder, silica (quartz) or apatite? silica (quartz) is harder apatite is harder

Explanation:

To determine which is harder, we compare the hardness values. Apatite has a hardness of 5, and silica (quartz) has a hardness of 7. Since 7 > 5, silica (quartz) is harder.

Answer:

Silica (quartz) is harder