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Chemical Hazards and Reactions

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A chemical reaction is the interaction of two or more substances, resulting in chemical changes.

Chemical reactions usually occur in one of the following ways:
Combination: A + B -> AB
  • “Combination” to either a more hazardous or innocuous substance
Decomposition: AB -> A + B
  • “Breakdown” to either a more hazardous or innocuous substance
Single Replacement: A + BC -> B + AC
Double Replacement: AB + CD -> AD + CB

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