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Vocab Chem Reactions
vocab for chemical reactions
Term | Definition |
---|---|
Chemical Formula | a shorthand way to use chemical symbols and numbers to represent a substance. (H2O) |
Chemical equation | Uses symbols to show the relationship between the reactants and the products. C+O2----> CO2 |
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 a result of a chemical reaction ----> MgO2 |
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 2 simpler substances |
Single-Displacement Reaction | One element replaces another element in a compound leaving a new compound and 1 element |
Double-Displacement Reaction | The 2 metal ions in 2 compounds switch places in a chemical reaction |
Law of Conservation of Mass | States that mass is neither created or destroyed in a chemical reaction |