Physical Science

CH 6 Chemical reactions

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Types of chemical reactions

1.Synthesis reaction

2.Decomposition reaction

3.Single replacement reaction

4.Double replacement reactio n

5.Combustion

1. Synthesis reaction

§When two or more substances combine to form a single substance.

A + B -----> AB



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2. Decomposition reaction

When a single compound breaks down into simpler compounds.


AB ------> A + B


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3. Single replacement

When an element replaces another element in a compound.


A + BC -----> B + AC




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4. Double replacement

When the cations of two compounds switch places.


AB + CD -----> CB + AD



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5. Combustion reaction

When substances in a reaction combine with oxygen to produce energy + carbon dioxide and water.



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