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vocab Chem reaction
vocabulary Words Chemical Reactions
Term | Definition |
---|---|
Chemical reaction | When atoms of elements break apart and rearrange to become new substances |
Synthesis Reaction (Magnesium combines with oxygen to make magnesium oxide) | When two or more substances combine to create one new compound |
Decomposition Reaction (Sugar breaks down into hydrogen, oxygen, and carbon) | A reaction where a single compound breaks down to form 2 simpler substances |
Single-displacement Reaction (Sodium replaces hydrogen in water) | One element replaces another element in compound leaving a new compound and one element |
Double Displacement Reaction | The 2 metal ions in 2 compounds switch places in chemical reactions |
Law of Conservation 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 (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 as a result of a chemical reaction (MgO2) |