Vocabulary
Chemical Reaction
A change in which one or more substances are converted into new substances while energy is released or absorbed.
a reaction in which the energy released is in the form of heat
What are the 2 sides of a chemical equation called?
Reactants and Products
What type of reaction is: C + O2 --> CO2
Synthesis
Balance the following equation: Na+H2O-->NaOH+ H2
2Na+3H2O-->2NaOH+H2
Chemical Formula
A set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
Endothermic Reaction
A chemical reaction that absorbs energy primarily in the form of heat
what does (g) stand for?
gas
What type of reaction is this: K+NaCl --> KCl + Na
Single Displacement
Balance the following equation: Be2C + H2O --> Be(OH)2 + CH4
Be2C + 4H2O --> 2Be(OH)2 + CH4
Chemical Equation
A way to describe a chemical reaction using chemical formulas and other symbols.
Precipitate
An insoluble compound that comes out of solution during a double-displacement reaction
What shows the number of each element in an equation?
A subscript
What type of reaction is: ZnCO3 --> ZnO + CO2
Decomposition
Balance the following equation: Ca2Br2+NaCO3-->2CaCO3+NaBr
Catalyst
Substance that speeds up a chemical reaction without being permanently changed itself
Combustion Reaction
A reaction that occurs when a substance reacts with oxygen to release energy in the form of heat and light
What is a number that represents the number of units of each chemical taking part in a reaction?
A coefficient
What type of reaction is: KBr + AgNO3 --> KNO3 + AgBr
Double Displacement
Balance the following equation: Al+HCl-->AlCl3+H2
2Al+6HCl-->AlCl3+3H2
Inhibitor
Substance that is used to slow down a chemical reaction
Law of Conservation of Mass
Mass can not be either made or destroyed
aq is short for what word?
What type of reaction is: 2Al(s) + 3CuSO4(aq) --> 3Cu(s) + Al2(SO4)3(aq)
single displacement
Balance the following equation: Ca2Br2+NaCO3-->CaCO3+NaBr
Ca2Br2+2NaCO3-->CaCO3+NaBr