The definition of a gem is "a precious stone, cut and polished for jewelry. They are all minerals. Some highly desirable gemstones may not be suitable for jewelry, yet be very collectible, like sphene. Others, like those in the corundum family, are prized for color and hardness, like emeralds and diamonds. Further, some common minerals, when polished, make beautiful pieces. With all that said, i woukd go with rarer.
That would be Protons and Neutrons.
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230,294.9 I think it's fine just try your past or ask teacher help
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An atom is the smallest particle of an element that can take part in a chemical reaction while a molecule is a group of chemically combined atoms.
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