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Question generated: Endothermic reactions are reactions that require more energy to start than they give off in the products. Which statement describes an endothermic reaction?

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Question generated: Oxygen reacts with iron to produce rust and with hydrogen to produce water. Which statement describes both reactions?

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Question generated: In humans, a trait can be determined by one pair or many pairs of

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Water is often put through a treatment system before it is used in homes as drinking water. Which is the most likely reason water is treated before people drink it?