Chemistry
What is a vital constituent of plant and animal life, and is the key component of hemoglobin?
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The study of composition and properties of substances and matter is called?
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The Statue of Liberty is made of an iron frame with a sheet of what other metal hung over it?
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What is formed when metals are blended with other metals?
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What is best described as the separation of a material into elements or parts?
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Silver chloride and silver nitrate are both chemicals that darken with exposure to what?
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