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How Chemical Reactions Happen |
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| Flesch-Kincaid grade level: | 7.97 |
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How Chemical Reactions Happen
By Cindy Grigg |
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1 Chemical reactions happen around us all the time. Some happen all by themselves like when plants use photosynthesis to chemically change energy from the sun into food. People also cause chemical reactions to happen. Cooking food and burning fuel cause chemical reactions. A chemical reaction is a process when one or more substances are changed into other substances. How do they happen? It all can be explained by atoms.