What color are amethysts?

Which two are chemically the same?

Diamond's hardness on the Moh's scale is

Which metal is liquid just about room temp?

Which of the following is an enzyme?

What is a catalyst?

Which of the following is NOT a property of metals?

Your energy production and fat storage is controlled by your

What color are barium fireworks? (and presumably lightsabers?)

Which is element is common in meteorites, but rare in earth's crust?

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