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A substance that speeds up the rate of a chemical reaction is called A. a catalyst. B. a lipid. C. a molecule. D. an element.
A substance that speeds up the rate of a chemical reaction is called CATALYST.
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Asked 5/21/2014 5:03:59 PM
Updated 5/21/2014 5:35:36 PM
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Confirmed by alfred123 [5/21/2014 5:35:36 PM]
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The energy needed to get a reaction started is the A. adhesion energy. B. activation energy. C. cohesion energy. D. chemical energy.
Weegy: The energy needed to get a reaction started is the activation energy. (More)
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Updated 5/21/2014 5:17:17 PM
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The process by which organisms keep everything inside their bodies within certain limits is called A. homeostasis. B. evolution. C. metabolism. D. photosynthesis.
Weegy: The process by which organisms keep everything inside their bodies within certain limits is called A. homeostasis. (More)
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Updated 5/22/2014 7:06:14 AM
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A well-tested explanation that explains a lot of observations is A. a hypothesis. B. an inference. C. a theory. D. a controlled experiment.
Weegy: It is: C. a theory. User: The work of scientists usually begins with A. testing a hypothesis. B. careful observations. C. creating experiments. D. drawing conclusions. Weegy: A. Testing a hyptohesis (More)
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Updated 5/22/2014 7:03:50 AM
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The work of scientists usually begins with careful observations.
Added 5/22/2014 7:03:50 AM
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