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Vocab List #4
Chemical Reactions
10
Chemistry
8th Grade
11/16/2008

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Term
Chemical equation
Definition
A short easy way to show a chemical reaction using symbols
Term
Reactant
Definition
A substance that enters into a chemical reaction as the starting materials.
Term
Product
Definition
A substance formed as a result of a chemical reaction.
Term
Conservation of Mass
Definition
The principle stating that matter is not created nor destroyed during a chemical reaction
Term
Synthesis
Definition
A chemical reaction in which two or more simple substances combine to form a new, more complex substance.
Term
Decomposition
Definition
A chemical reaction that breaks down compounds into simpler products.
Term
Replacement
Definition
A chemical reaction in which one or two elements trade places in different compounds.
Term
Precipitate
Definition
A solid that forms from a solution during a chemical reaction.
Term
Physical change
Definition
A change that alters the form or appearance of a material but does not change the material into another substance.
Term
Chemical reaction
Definition
The process in which substances undergo chemical changes that result in the formation of new, different substances
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