Diamonds are mined on Earth. There are also laboratory made diamonds. Why would the diamonds found on Earth be considered minerals, and the laboratory diamond would not be minerals?

A) The laboratory diamond is not a crystalline solid.
B) The laboratory diamond has excess luster to be considered a mineral.
C) The criteria for a diamond to be classified as a mineral is that is must be
naturally occurring and not be laboratory made.
D) The criteria for a diamond to be classified as a mineral is that it must be
organic, and the laboratory diamond is inorganic.

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it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.