Geography

Geography, 09.07.2019 18:30, hodgesr3346

What minerals will a penny not scratch.

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Physics, 31.07.2019 17:00, cannaincorporated

One student did an experiment with two unknown minerals, mineral 1 and mineral 2. the hardness scale shown below was used for the experiment. mineral talc gypsum calcite fluorite apatite orthoclase hardness 1 2 3 4 5 6 any mineral on the hardness scale would scratch minerals below it on the scale. the student tested mineral 1 and observed that it could scratch only two other minerals on the hardness scale. it was observed that mineral 2 could scratch only four other minerals on the hardness scale. which of these is a correct conclusion the student can make about mineral 1 and mineral 2? a) mineral 1 can be used to scratch talc and mineral 2 can be used to scratch orthoclase. b) mineral 1 can be used to scratch orthoclase and mineral 2 can be used to scratch talc. c) mineral 1 can be used to scratch calcite and mineral 2 can be used to scratch gypsum. d) mineral 1 can be used to scratch gypsum and mineral 2 can be used to scratch calcite.

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Chemistry, 04.08.2019 07:00, alexmoy45p8yd7v

Monica found a clear mineral crystal. she wanted to identify its hardness. she tried to scratch it with her fingernail, a penny, and a steel nail but none of those worked. then she tried topaz, which did leave a scratch . the mineral was able to scratch glass. what mineral could monica have found? explain your answer.

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Biology, 17.10.2019 04:10, shadenShaden4528

10 1. mineral a scratches minerals e and i, but it can be scratched by mineral j. 2. mineral c can be scratched by every other mineral. 3. mineral e can scratch mineral i. 4. mineral f can scratch only mineral c. 5. mineral b can scratch mineral f, but it can be scratched by all the other minera 6. mineral h can scratch every other mineral. 7. mineral d can be scratched only by mineral h. 8. mineral g can be scratched by minerals hand d; it can scratch mineral j. prentice-hall, inc.

Answers: 2

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Biology, 07.11.2019 06:31, tbair5417

10 1. mineral a scratches minerals e and i, but it can be scratched by mineral j. 2. mineral c can be scratched by every other mineral. 3. mineral e can scratch mineral i. 4. mineral f can scratch only mineral c. 5. mineral b can scratch mineral f, but it can be scratched by all the other minera 6. mineral h can scratch every other mineral. 7. mineral d can be scratched only by mineral h. 8. mineral g can be scratched by minerals hand d; it can scratch mineral j. prentice-hall, inc.

Answers: 3

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