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Published byKristopher Mosley Modified over 9 years ago
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Chemical Reactions
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Review: Chemical vs Physical Change Physical Change: when the matter stays the same, but there is a change in size, shape, or appearance. Chemical Change: a change where the matter changes to a different kind of matter.
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Chemical Reactions A chemical reaction is a process that rearranges the atoms of one or more substances into one or more new substances.
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In every chemical change, new substances are formed. These new substances are called products of the chemical change. The starting substances are called the reactants of the chemical change.
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A word equation shows both the reactants and the products of a chemical change: Reactants -> Products
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Guided Practice Baking soda + vinegar ---> carbon dioxide What are the reactants? What is the product?
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2H 2 + O 2 ---------> 2H 2 O What are the reactants? What are the products?
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2Fe + O 2 --------------> 2FeO What are the reactants? What are the products?
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Form a chemical equation 2 H2 and O2 combine to make 2H2O. 2 H2 + O2 2H2O
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Form a chemical equation ATP, CO2 and H2O are made from glucose and O2. Glucose + O2 ATP + CO2 + H2O
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