There are many types of chemical reactions, five general ones of which I will be describing. Chemical changes are a result of chemical reactions. All chemical reactions involve a change in substances and a change in energy. Neither matter nor energy is created or destroyed in a chemical reaction, only changed. There are so many chemical reactions that it is helpful to classify them into 5 general types, which include the following: synthesis, combustion, decomposition, single-replacement, and double-replacement.
The reaction of synthesis includes two or more substances, which will then turn into one compound, usually being a more complex substance. The formula for synthesis is A+B → AB, and an example would be 2Na+Cl2 → 2NaCl. Another good example to better understand is two simple substances, such as hydrogen and oxygen can yield a more complex substance → water.
Combustion has reactants of: metal and oxygen, nonmetal and oxygen, and a compound and oxygen yielding either......
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