Chemistry
What is the common name of the chemical compound H2O?
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What makes matter expand when it's heated and contract when it's cooled?
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What is the stinky gas associated with swamps and anaerobic decomposition?
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What is the symbol used on the periodic table for the element Promethium?
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The noble gases that make up Group XVIII of the periodic table is also known as which of the following?
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What branch of chemistry is concerned with the chemistry of living organisms?
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Orange street lighting is orange because of the presence of what element in the lamp?
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What is known as the energy required to start a chemical reaction?
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Which state of matter has molecules packed together tightly?
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