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Question generated: Because sulfur cannot be decomposed by simple chemical methods into two or more different substances, it is classified as

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Question generated: Living organisms require energy for biological processes. Chemical energy in a plant cell is

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Question generated: If a class wants to measure the speed of a bicycle during an outdoor lab exercise, which two devices would be most useful?

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A light bulb manufacturer claims its light bulb is "twice as bright" per unit of electrical energy consumed as the leading light bulb. If this claim is correct, what factor must be accurately compared between the two bulbs?