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Chemical Reactions

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Jager Overson

on 7 October 2014

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Transcript of Chemical Reactions

Classes of reactions:
Spontaneous reactions such as explosions are quick and require little other energy than heat. Non-spontaneous reactions such as rusting happen slowly and require other types of energy.
Reactants and Reagents
The elements involved are called reagents. Reactants are, more specifically, elements that are consumed in the chemical reaction.
Chemical Formulas
Chemical formulas, or equations are how we graphically illustrate chemical reactions.

Example: O2+2H2 2H2O
- Two or more simple substances combine to make a more complex substance.

Example: A+B AB
Chemical Reactions:
Chemical reactions are how one set of chemical substances changes to another. This only affects the position of the electrons and different atoms being bonded in different ways.
Chemical Reactions
Types of Reactions
- One complex substance divides to create two simple substances.

Example: AB A+B
Single Replacement
- A single uncombined element trades with one in a compound.

Example: A+BC AB+C
Double Replacement
- Two compounds trade an element.

Example: AB+CD AD+CB
Chemical Properties
Any of a material's properties that are apparent during a chemical reaction. That is, any quality that can be established ony by changing a substance's chemical identity.
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