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Level 63

Chemical Equations & Reactions


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chemical equation
a way to describe a chemical reaction using chemical formulas and other symbols
reactants
A starting material in a chemical reaction
products
A substance formed as a result of a chemical reaction.
synthesis
A+B?AB
combination
A+B?AB
decomposition
AB?A+B
single replacement
A +BC ? B + AC
AB+CD?CB+AD
double replacement
single displacement
A + BC ? AC + B
combustions
hydrocarbon + O2 (g) ---> CO2 (g) + H2O (g)
limiting reactant
A reactant that is totally consumed during a chemical reaction, limits the extent of the reaction, and determines the amount of product.
excess reactant
the reactant that is not completely used up in a chemical reaction
Stoichiometry
Part of chemistry that studies amounts of substances that are involved in reactions
mole-mole ratio
a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
Molar Mass
mass in grams of 1 mol of a substance
percent yield
(Actual Yield/Theoretical Yield) x 100%
theoretical yeild
In a chemical reaction, the maximum amount of product that can be produced from a given amount of reactant.
actual yeild
the amount of product that actually forms when the reation is carried out in the labratory
experimental yeild
The amount of product produced form an experiment