Definitions
The substance being
changed in a chemical
reaction is the:
Reactant
In a balanced equation, the total mass of the reactants must equal the total mass of the products, according to the _____
(Which law is this?)
Law of conservation of mass
2Na + Cl2 ----> 2NaCl is an example of which type of reaction?
Synthesis
All of the following factors may speed up a chemical reaction except:
A. Smaller surface area
B. Higher temperature
C. Higher pressure
D. Presence of a catalyst
A. Smaller surface area
A + B ----> AB represents the general formula for which type of reaction?
Synthesis
In a ______ reaction, energy is absorbed as heat from the surroundings.
Endothermic
Balance:
H2O ----> H2 + O2
2H2O ----> 2H2 + O2
This type of reaction will result when something is burned.
Combustion
A glow stick gives off light when bent and activated. This is an example of a ____ reaction.
Exergonic
When two aqueous substances react they can form an insoluble compound called a ____
Precipitate
____ speeds up a reaction by lowering the activation energy
catalysts
Pb(OH)2 + HCL ----> H2O + PbCl2
Pb(OH)2 + 2HCl ----> 2H2O + PbCl2
The process of digestion, or the breakdown of the food you eat, is most likely which type of reaction?
Decomposition
When calcium chloride is reacted with water. the beaker feels warm. This is an example of a ____ reaction.
Exothermic
In a combustion reaction, ____ must be present for the reactant to burn.
O2
In a chemical reaction, ___ are changed to balance the reaction
Coefficients
C3H8 + O2 ----> CO2 + H2O
C3H8 + 5O2 ----> 3CO2 + 4H2O
2K + 2H2O ----> H2 + 2KOH is an example of which type of reaction?
(___ replacement)
Single
Why does an increase in temperature increase the rate of a reaction?
Increasing temperature increases kinetic energy of the particles, therefore they collide more
Balance and classify:
Kl + Br2 ----> KBr + l2
(Include the ___ replacement)
2Kl + Br2 ----> 2KBr + l2
Single replacement
Define Aqueous
Dissolved in water
Complete and balance this synthesis reaction:
K + Cl2 ----> ____
2K + Cl2 ----> 2KCl
This type of reaction can result in the formation of a precipitate
(___ reaction)
Double
Explain how pressure affects the rate of reaction. Include what type of substances it specifically affects.
Complete and balance this replacement reaction
Al(OH)3 + Mg3(PO4)2 ----> _____
(FINAL JEOPARDY):
Complete and balance this combustion reaction:
C7H17 + O2 ----> ____
2Al(OH)3 + Mg3(PO4)2 ----> 2AlPO4 + 3Mg(OH)2
(FINAL JEOPARDY):
4C7H17 + 45O2 ----> 28CO2 + 34H2O