1. A. Write skeleton equations
Hydrogen gas reacts with bromine gas to produce gaseous hydrogen monobromide
Carbon Monoxide Gas reacts with oxygen gas to produce Carbon dioxide
Solid potassium chlorate decomposes to produce solid potassium chloride and oxygen gas

2. B. Use the following equation to answer the questions
2NaOH + CaBr2  Ca(OH)2 + 2NaBr
? g 75g g
Identify the reactants
Identify the products
How many moles of NaBr are produced
How many grams of NaOH are used

3. C. Identify the meaning of the symbol
(aq)  ∆ .

4. D. Balance the following
Fe + Cl2  FeCl3
Pb(NO3)2 + KI  PbI2 + KNO3
Ni + AuBr3  NiBr2 + Au
C12H22O11 + O2  CO2 + H2O

5. E. Identify the type of reaction
Ti +2Cl2  TiCl4
AgNO3 + LiI  AgI + LiNO3
2C2H2 + 5O2  4CO2 + 2HOH
Mg + Cr(NO3)3  Mg(NO3)2 + Cr
A + B  AB + Heat

6. F. Predict the products HCl  NaOH + CuCl2  H2SO4 + NaCN  Al + I2 
Mg + Sn(NO3)4 

7. G. Turn the following into sentences
K(s) + ZnNO3(aq)  Zn KNO3 (aq)
3Li(s) + AuCl3 (aq)  3LiCl(aq) + Au(s)
Al2(CO3)3(s)  Al2O3(s) + 3CO2

8. ANSWERS H2 (g) + Br (g)  HBr (g) CO (g) + O2 (g)  CO2 (g)
KClO3 (s) KCl (s) + O2 (g)
2NaOH + CaBr2
Ca(OH)2 ­+ 2NaBr 2
105g
Aqueous (dissolved in water)
Yields or produces
Heat
Reversible reaction
4,3,2
1,2,1,2
3,2,3,2
1,12,12,11
synthesis
Double
combustion
single
(synthesis) exothermic
H + Cl2
NaCl + Cu(OH)2
HCN + Na2SO4
AlI3
Mg(NO3)2 + Sn

9. A. Ni(OH)2(s) + HCl(aq)  NiO(aq) + H2 (g) +HCl(aq)
Finely ground nickel (II) hydroxide is placed in a beaker of water. It sinks to the bottom of the beaker and remains unchanged. An aqueous solution of hydrochloric acid is then added to the beaker, and the Ni(OH) 2 disappears. Which of the following equations best describes what occurred in the beaker?
A. Ni(OH)2(s) + HCl(aq)  NiO(aq) + H2 (g) +HCl(aq)
B. Ni(OH)2(s) + 2H2O(l)  NiCl2 (aq) + 2H2O(l)
C. Ni(OH)2(s) + 2H2O(l)  NiCl2 (aq) + 2H2O(l)
D. Ni(OH)2(s) + 2H2O(l)  NiCl2(aq) + 3H2O(l) + O2(g)
Answer = B Question from D2SC

10. Which set of coefficients would balance the following equation?
Mg + AlCl3  Al + MgCl2
2Mg + AlCl3  Al + 2MgCl2
3Mg + 2AlCl3  2Al + 3MgCl2
Mg + 2AlCl3  2Al + MgCl2
3Mg + 4AlCl3  4Al + 3MgCl2
Answer = B
Question from D2SC