Reaction Basics
The reactants in a chemical equation?
What are the starting materials for a reaction?
A substance that releases hydrogen ions when dissolved in water.
What is an acid?
Balance the following equation:
H2 + O2 ---> H2O
2 H2 + O2 ---> 2H2O
This is the first step in balancing a chemical equation.
What is make a chart and list the elements?
A + B --> AB
What is a synthesis reaction?
The products in a chemical equation.
What are the new substances formed by a chemical reaction?
A substance that releases hydroxide ions into solution when dissolved in water.
What is a base?
Balance the following equation:
KClO3 ---> KCl + O2
2KClO3 ---> 2KCl + 3O2
The part of a chemical equation you can adjust to balance the equation.
What are the coefficients?
AB --> A + B
What is a decomposition reaction?
The reactants and products in the following chemical equation: H2 + 2NaCl ---> 2HCl + 2Na
What are H2 and NaCl?
An insoluble substance that "falls" out of solution.
What is a precipitate?
Balance the following equation:
C3H8 + O2 ---> CO2 + H2O
C3H8 + 5O2 ---> 3CO2 + 4H2O
If no subscript is written, you can assume that the number of atoms in a formula is this number.
What is one?
AB + CD --> AD + CB
What is a double displacement reaction?
In a chemical reaction, matter can neither be created nor destroyed.
What is the law of conservation of mass?
This equation shows all of the ions present during a chemical reaction.
What is the complete ionic equation?
Balance the following equation:
P + O2 ---> P2O5
4P + 5O2 ---> 2P2O5
H+ + OH- --> H2O
A + BC --> B + AC
What is a single displacement reaction?
The number that comes before a formula in a chemical reaction. Example: 2HCl --> H2 + Cl2
What is a coefficient?
Ions that do not participate in an aqueous chemical reaction.
What are spectator ions?
Balance the following equation:
NaBr + CaF2 ---> NaF + CaBr2
2NaBr + CaF2 ---> 2NaF + CaBr2
The letters in parentheses after a formula indicate this important information.
What is the physical state of a substance?
Hydrocarbon (CxHx) + O2 --> CO2 + H2O
What is a combustion reaction?