Predicting Products – Look at the following reactions and do the following:
1) Identify the reaction as C, S, D, SD, DD, or AB
2) If it is a S or D, identify it as:
a. hydroxide
b. carbonate
c. chlorate
d. binary
e. acid
3) After you have identified the reactions, predict the products. I suggest that you predict the
products of all of one type of reaction and then move on to a different type of reaction (i.e. all
the synthesis, then all the single displacements, etc.). I would make sure that I did the
decompositions before the syntheses.
4) Determine whether the products are aqueous or precipitates by using the solubility rules.
5) For the single displacement reactions, use the activity series to determine if they would
actually occur.
1. Rxn Type
SrCl2
+
Cs2CO3 
2. Rxn Type
Mg
NiCl2 
+
3. Rxn Type
C6H14
+
O2 
+
O2 
4. Rxn Type
NaCl
5. Rxn Type
HCl
6. Rxn Type
KClO3 
+
NaOH 
7. Rxn Type
K2CO3 
8. Rxn Type
H2SO4
+
Ba(OH)2 
9. Rxn Type
Zn
CuCl2 
+
10. Rxn Type
Na3PO4
+
MgCl2 
11. Rxn Type
NaOH 
12. Rxn Type
Cu
O2 
+
13. Rxn Type
BaO
+
H2 O 
14. Rxn Type
g
C3H8
+
O2 
+
CO2 
15. Rxn Type
Cs2O
16. Rxn Type
FeCl3 
Assume Cu+1
17. Rxn Type
Na2S
CuCl 
+
18. Rxn Type
H2SO4
+
Ca(OH)2 
19. Rxn Type
SbCl3
+
Fe 
Assume Fe+2
20. Rxn Type
AlCl3
21. Rxn Type
HNO3 
+
H2SO4 
Writing Chemical equations …More practice
Directions: Classify each reaction, use solubility chart and activity series to predict if reaction
will occur
_________1) Aqueous aluminum nitrate is reacted with a piece of magnesium
________________________________________________________________________
________2) Solid potassium chlorate is decomposed
________________________________________________________________________
_______3) Aqueous solutions of sulfuric acid and magnesium hydroxide react
________________________________________________________________________
______4) a piece of Iron reacts with oxygen gas (assume ferric in product)
________________________________________________________________________
_____5) Solid nickel II carbonate decomposes
________________________________________________________________________
______6) Aqueous magnesium bromide is reacted with bromine gas
________________________________________________________________________
______7) Solid calcium oxide and carbon dioxide react
________________________________________________________________________
______8) butane gas (C4H10) is combusted (don’t forget oxygen is a reactant!)
________________________________________________________________________
______9) Solid calcium chlorate decomposes
________________________________________________________________________
______10) Aqueous solutions of sodium phosphate and lead II nitrate react
________________________________________________________________________
_____11) Solid strontium chloride reacts with oxygen gas to form a solid product
________________________________________________________________________
_____ 12) A piece of aluminum is placed in a solution of lithium chloride
_______________________________________________________________________
Identify the reaction type, predict the products, and balance the equations. If it is a special
decomposition or synthesis, identify which kind.
1. calcium + oxygen →
2. cupric carbonate →
3. aluminum + hydrochloric acid →
4. potassium iodide + chlorine →
5. barium chloride + sodium sulfate →
6. copper + silver nitrate → cupric nitrate
7. barium hydroxide + sulfuric acid →
8. zinc sulfate + ammonium sulfide →
9. sodium + water →
10. magnesium + sulfuric acid →
Chemical Equations
1. The actual knowledge about what products are produced in a chemical reaction is
obtained by
a. inspecting the chemical equation
b. balancing the chemical equation
c. laboratory analysis
d. writing a word equation
2. Once the correct formula for a reactant in an equation has been written, the
a. subscripts are adjusted to balance the equation
b. formula should not be changed
c. same formula must appear as a product
d. symbols used in the formula must not be used on the product side of the equation
3. In writing an equation in which hydrogen gas appears as a product, the correct
representation of hydrogen gas is
a. H
b. 2 H
c. H2
d. OH
4. In a chemical equation, the symbol “→” is read
a. aqueous
b. goes
c. yields
d. points
5. In a chemical equation, the symbol “↑” is used for a(n)
a. heated reactant
b. gaseous reactant
c. catalyst
d. gaseous product
6. How would oxygen be represented in the formula equation for the reaction between
methane (CH4) and oxygen to yield carbon dioxide and water?
a. oxygen
b. O
c. O2
d. O3
7. What is the ratio of hydrogen to chlorine in the equation H2(g) + Cl2(g) → 2 HCl(g)?
a. 1:2
b. 2:1
c. 1:1
d. 4:2
8. Balanced formula equations express all of the following EXCEPT
a. experimentally established facts
b. mechanisms by which reactants become restructured into products
c. identities of reactants and products in a chemical system
d. relative quantities of reactants and products in the system
9. A reversible reaction is indicated by
a. a capital R
b. a lower-case r
c. an up and down arrow
d. two yield symbols pointing in opposite directions
10. When the equation Fe3O4 + Al → Al2O3 + Fe is correctly balanced, the coefficient of Fe
is
a. 3
b. 4
c. 6
d. 9
11. In a chemical equation, the symbol “(s)” indicated that the substance is a(n)
__________________________.
Activity Series of the Elements
1. The ability of an element to react is referred to as an element’s
a. valence
b. activity
c. stability
d. electronegativity
2. An element in the activity series can replace any element
a. in the periodic table
b. below it on the list
c. above it on the list
d. in its group
3. An activity series is useful because it allows a person to predict
a. whether or not a certain chemical reaction will occur
b. the amount of energy released by a chemical reaction
c. the electronegativity values of elements
d. the melting points of elements
4. For a single replacement reaction, an element will replace from a compound in aqueous
solution those elements
a. above it in the activity series
b. with lower atomic masses
c. below it in the activity series
d. with higher atomic masses
5. To replace hydrogen fromsteam, a metal must be
a. above cobalt in the activity series
b. below hydrogen in the activity series
c. a halogen
d. less reactive than lithium
6. In the activity series, any metal above hydrogen reacts with acids, replacing
a. hydrogen
b. oxygen
c. chlorine
d. water
7. The synthesis of oxides by reaction with oxygen occurs for any metal in the activity series
a. below platinum
b. above gold
c. above silver
d. below tin
8. Oxides are formed only indirectly by metals in the activity series
a. above zinc
b. below calcium
c. above tin
d. below mercury
9.
In the presence of oxygen, O2, gold can be expected to
a. rapidly form an oxide
b. slowly form an oxide
c. not react
d. rapidly form a metallic hydroxide
10. In the activity series, oxides of metals below copper
a. do not exist
b. do not decompose
c. decompose with heat alone
d. are acidic
11. In the activity series, oxides o f metals below chromium yield metals when
a. heated with hydrogen
b. cooled below 0 oC
c. combined with oxygen
d. added to acids
12. Since mercury is below copper in the activity series, heating HgO will result in
a. no reaction
b. the formation of a hydroxide
c. the formation of Hg2O
d. decomposition
13. Predict what will happen when calcium metal is added to a solution of magnesium chloride.
a. No reaction will occur
b. calcium chloride will form
c. magnesium calcite will form
d. gaseous calcium will be produced
14. Predict what will happen when zinc is added to water.
a. no reaction will occur
b. steam will be produced
c. zinc oxide will form
d. hydrogen will be released
15. Predict what will happen when lead is added to nitric acid.
a. no reaction will occur
b. oxygen will be released
c. lead oxide will form
d. hydrogen will be release