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11 Cards in this Set
- Front
- Back
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chemical reaction |
chemical change new substance -bonds are broken and others are formed. |
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law of conservation of mass |
all reactants are equal in mass to all products |
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law of conservation of mass results in |
balancing of chemical equations |
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evidence of chemical change |
change in energy -light and heat change in properties - colour - odour -bubbles -precipitation |
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types of chemical reactions |
synthesis decomposition single displacement double displacement |
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synthesis |
when 2 or more elements or simple compounds combine to form complex compound |
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Decomposition |
-opposite of synthesis -when a complex compound in broken into simper compounds or elements -it can happen by heat |
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single displacement |
when one element replaces another one |
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double displacement |
when 2 elements switch in two compounds |
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reactants |
the starting materials in a chemical reaction |
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products |
the end result materials in a chemical reaction on the right side |
