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Categorizing Chemical ReactionsThe last topic for this lesson is categorizing chemical reactions on the basis of what happens to the elements in the reaction as represented by the chemical equation. (The following categories and equations are also shown in ex. 10 in your workbook.) The categories we will use for this lesson are decomposition, combination, single replacement (or single displacement), double displacement (or double replacement), and miscellaneous. If chemistry were taught in grade school these different categories of reactions would probably be called something like "take apart," "put together," "push out," and "trade partners" reactions. Of course, you need to learn the chemical terminology, but these simpler phrases may help you identify what seems to be happening in each of these reaction types.
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