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C.Reaction Vocab
Chemical Reactions
Term | Definition |
---|---|
chemical reaction | when atoms of elements break apart and rearrange to become new substances. |
synthesis reaction | when two or more substances combine to create one new compound. |
decomposition reaction | a reaction where a single compound breaks down to form simpler substances. |
single-displacement reaction | one element replaces another element in compound leaving a new compound and one element. |
double-displacement reaction | the two metal ions in two compounds switch places in a chemical reaction. |
law of conservation of mass | states that mass is neither created nor destroyed in a chemical reaction. |
chemical formula | a shorthand way to use chemical symbols and numbers to represent a substance. |
chemical equation | uses symbols to show the relationship between the reactants and the product. |
SUBSCRIPT | H2O-small number to the right of the element that shows how many atoms there are of the element. |
COEFFICIENT | the large number that multiplies atoms of the element. 2Cl + 3Na |
reactant | a substance or molecule that starts a chemical reaction Mg + O2 |
product | the substance that forms as a result of a chemical reaction MgO2 |