Chemistry

What is the name for naturally-occurring alloy of gold and silver with a small amount of other metals?

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The temperature at which gas becomes liquid is considered what?
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What will usually happen to matter that is cooled?
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Which electron that would emit the greatest amount of energy by dropping electron levels?
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Actinium on the periodic table is noted by which symbol?
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Which of these is an element?
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What are vast amounts of oil that have become trapped in one place called?
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What element forms a brilliant mirror when it is painted on glass?
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What will happen to most matter that is heated?
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