Chemistry

What is the first element on the periodic table?

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What is the most commonly encountered form of silver?
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What makes matter expand when it's heated and contract when it's cooled?
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The temperature at which gas becomes liquid is considered what?
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Which of the following is the symbol for Iron?
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Under standard conditions, what periodic table group exists in all three main phases of matter?
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Which do people use in a swimming pool?
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Phosphorus is the 13th element to be discovered, where did it come from?
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What is the chemical symbol for gold?
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