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PS Chemical Rxns
Review of the parts of a chemical reaction
Question | Answer |
---|---|
starting material in a chemical reaction | reactants |
ending material in a chemical reaction | products |
speeds up a chemical reaction in nonliving things | catalyst |
Numbers never changed to balance a chemical equation | subscripts |
Numbers added to balance a chemical equation | coefficients |
a chemical equation that has unequal numbers of each element on both sides | skeleton |
this is conserved (saved) in every chemical reaction | mass & number of atoms |
use this coefficient if you do NOT want any change to the number of atoms | one |
says that mass is not created or destroyed in any chemical reaction | law of conservation of mass |
AB --> A + B | decomposition reaction |
AB + C ---> CB + A | single replacement reaction |
A + B --> AB | synthesis (combination) reaction |
AB + CD --> AD + CB | double replacement reaction |
CxHy + O2 --> CO2 + H2O | combustion reaction |
means 2 atoms | diatomic |
means 8 atoms | octatomic |
means 4 atoms | tetratomic |
means 1 atom | monatomic |
speeds up chemical reaction in living things | enzyme |