Chemistry
What is the second most abundant element by mass (about 18.5%) in the human body?
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What is the term for rain that contains chemical pollutants?
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What is the name of the temperature at which Helium I becomes Helium II?
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What symbol appears on the periodic table for the element with the atomic number 10?
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What is the symbol used on the periodic table for the element Chlorine?
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What is best described as the separation of a material into elements or parts?
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Which of the following is found in stinging insects?
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