Chemical Reactions Review

1. The type of chemical reaction that results in the formation of a single product is a _________ reaction.

a) combustionb) decompositionc) synthesisd) displacement

2. What type of reaction is represented by this general equation?

A + B AB

a) synthesisb) single replacementc) decompositiond) double replacement

3. What can be predicted by using an activity series?a) whether a certain single replacement reaction will occurb) if a chemical reaction will absorb energyc) the state of matter of the productd) the melting points of the reactants

4. A double replacement reaction will NOT go to completion if the productsa) combine to form a precipitateb) combine to form waterc) combine to form a gasd) remain in solution

5. In the following combustion reaction, what is the missing reactant?C3H8 + 5___ 3CO2 + 4H2O

a) Cb) O2

c) H2

d) CO2

6. If a metal is placed in an ionic solution containing another metal and no reaction occurs, then the metal originally in the solution is

a) a halogenb) not on the activity seriesc) higher on the activity seriesd) a catalyst

7. Which of the following could be a product of the decomposition of KI?a) KI2

b) KClc) Id) I2

8. In the reaction, Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g), what element has been displaced?

a) Znb) Sc) Hd) O

9. The reaction is Mg(s) + 2HCl(aq) H2(g) + MgCl2(aq) is a a) synthesis reactionb) single replacement reactionc) decomposition reactiond) double replacement reaction

10. A decomposition reaction is the only type of chemical reaction thata) has only one reactantb) results in the formation of a single productc) can involve the oxidation of organic compoundsd) has two compounds reacting to for two products

Short AnswerTell what type of chemical reaction is represented by each of the following chemical equations. Then balance the equation.

1. type of reaction:____________

CaCl2(aq) + NH4OH(aq) Ca(OH)2(s) + NH4Cl(aq)

2. type of reaction:____________

Sc2(CO3)3(s) Sc2O3(s) + CO2(g)