1. Writing Chemical Equations
“Translate” written equation into a chemical equation with formulas and symbols;
then balance the equation and tell what type of reaction it is.

2. CaO (s) + SO3 (g)  CaSO4 (s) Synthesis rxn
Solid calcium oxide is added to sulfur trioxide gas, producing crystals of calcium sulfate
CaO (s) + SO3 (g)  CaSO4 (s)
Synthesis rxn

3. 3F2 (g) + 2AlCl3 (aq)  3Cl2 (g) + 2AlF3 (aq) Single replacement rxn
Fluorine gas is bubbled through a solution of aluminum chloride, producing chlorine gas and aqueous aluminum fluoride
3F2 (g) + 2AlCl3 (aq)  3Cl2 (g) + 2AlF3 (aq)
Single replacement rxn

4. Solutions of cobalt (II) chloride and silver nitrate are mixed, forming silver chloride precipitate in cobalt (II) nitrate solution
CoCl2 (aq) + 2AgNO3 (aq)  2AgCl (s) + Co(NO3)2 (aq)
Double replacement rxn

5. pieces of strontium metal are added to lead (II) acetate solution, forming lead metal and aqueous strontium acetate
Sr (s) + Pb(CH3COO)2 (aq)  Pb (s) + Sr(CH3COO)2 (aq)
Single replacement rxn

6. heat Mg(ClO3)2 (s)  3O2 (g) + MgCl2 (s) Decomposition rxn
Crystals of magnesium chlorate are heated, releasing oxygen gas and leaving behind magnesium chloride powder
heat
Mg(ClO3)2 (s)  3O2 (g) + MgCl2 (s)
Decomposition rxn

7. Rubidium phosphate and titanium (IV) nitrate react in aqueous solution to form a titanium (IV) phosphate precipitate and rubidium nitrate solution
4Rb3PO4 (aq) + 3Ti(NO3)4 (aq)  12RbNO3 (aq) + Ti3(PO4)4 (s)
Double replacement rxn

8. elec. 2NaI (l)  2Na (s) + I2 (s) Decomposition rxn
Electric current is run through molten sodium iodide, yielding sodium metal and solid iodine
elec.
2NaI (l)  2Na (s) + I2 (s)
Decomposition rxn

9. 3Na (s) + Al(NO3)3 (aq)  3NaNO3 (aq) + Al (s) Single replacement rxn
Solid sodium metal is added to a solution of aluminum nitrate producing a solution of sodium nitrate and a piece of aluminum.
3Na (s) + Al(NO3)3 (aq)  3NaNO3 (aq) + Al (s)
Single replacement rxn