Question

1.Why are crystals rare ? 2. Why don't metals burn ?​

Answer 1

Answer:

1) Gemstones are valuable: A lot of time, effort, and information go into mining gemstones. ... As the cost of mining rises, these natural gemstones are harder to come by. Their value is constantly rising due to their scarcity, so one can make a profit from selling them as well.

2) metals have high boiling point.In summary, because most atoms in a solid chunk of metal don't have access to oxygen atoms, because metals have a high ignition temperature, and because metals are good thermal conductors, they don't burn very well in everyday situations

Explanation:

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Answer 2

Answer:

in summary because most atoms in a solid chunk of metal don't have access to oxygen atoms because metals have a high ignition temperature and because metals are good thermal conductors and they don't burn very well in everyday situations.