Download Chemical Reactions Practice Test

Name:___________________________________
Period;)__________
Chemical Reactions Practice Test
multiple choice – please use capital letters
_____1. Neon has an atomic number of 10 and calcium has an atomic number of 20.
Compared to a mole of neon, a mole of calcium has
a) twice as many atoms
b) the same number of atoms
c) half the number of atoms
_____2. What unit allows chemists to compare one chemical to another?
a) amu
b) kilograms
c) atomic weights
d) moles
______3. The coefficients from the balanced equation represent
a) mole ratios
b) masses
c) molar masses
_______4. In a chemical equation the symbol (aq) means
a.
b.
c.
d.
water
dissolved in water
an acid
insoluble
_______5. The tendancy for a replacement reaction to occur increases as the
a.
b.
c.
d.
temperature increases
valence electrons are used up
interval between the two similar elements increases on the activity series
interval between the two similar elements decreases on the activity series
_______6. The production of a slightly soluble solid compound in a double displacement
reaction results in the formation of a
a.
b.
c.
d.
gas
precipitate
combustion reaction
halogen
Name:___________________________________
Period;)__________
______7. The coefficients tin a chemical equation
a.
b.
c.
d.
indicate the number of moles that react
show the number of g rams of each substance that react
are the mo;lar masses of the substances that react
show the valence electrons for each atom
______8. If metal X is lower than metal Y on the activity series, then
a.
b.
c.
d.
X will replace ions of Y in solution
Y will replace ions of X in solution
Y will form oxides only indirectly
X will react with cold water
______9. To balance a chemical equation it is permissable to adjust the
a. subscripts
b. coefficients
c. compound formulas
d number of products
PART 2
Balance
1.
C2H6 +
O2 ----->
2.
KClO3 ----->
3.
NH4Cl +
4.
Aluminum phosphate + Ammonium carbonate -----> Aluminum carbonate + Ammonium phosphate
KCl +
CO2 +
H2O
O2
Ba(OH)2 ----->
BaCl2 +
NH4OH
Name:___________________________________
Period;)__________
5.
Ammonia + oxygen ----->
6.
Sodium phosphate + Calcium nitrate----> Calcium phosphate + sodium nitrate
7.
Nitric acid + Potassium Iodide -----> Postassium nitrate + Iodine + Nitrogen monoxide + water
8.
HCl +
9.
C2H5OH +
KMnO4 ------>
Nitrogen monoxide + water
H2O +
KCl +
O2-------> CO2 +
H2O
MnCl2 +
Cl2
Name:___________________________________
Period;)__________
PART 3
*Use the activity series to predict whether or not the following will occur
1. Platinum + H2O (g) --------->
Yes
2. Calcium fluoride + chlorine ---->
Yes
No
No
3. HCl + NaOH --------->
Yes
No
4. Cobalt + HNO3 ------->
Yes
No
5. Hg + O2 ------->
Yes
No
6. Mn + SrS ------->
Yes
No
7. Cu + AgNO3------->
Yes
No
_________________________________________________________________
PART 4 Integrating Skills
FOR EACH PROBLEM:
step #1* Predict products
step #2* Use oxidation numbers to determine formulas
step # 3* Write balanced equations
step #4* Classify reaction type on the line provided
1. Lithium + Water ------->
__________
2. Zinc + Hydrochloric Acid ------->
__________
3. C2H2 + Oxygen ------>
__________
Name:___________________________________
Period;)__________
4 Calcium Chloride + Fluorine ----->
__________
5. Lithium iodide + iron ----->
__________
SHOW ALL WORK FOR CREDit
___ C2H6 + ___ O2 -----
+
1. If 3408 grams of C2H6 are reacted and 5301 grams of water are actually produced,
what is the percent yield?
____Mg2Si + __H2O ------
+
2. If 36 grams of water and 57 grams of M2Si are reacted
a) how many grams of Silcon hydride will be produced?
b) What is the limiting reactant?
c) How many grams of the excess reactant will be leftover?
d) How many molecules of Mg(OH)2 will be produced?
Name:___________________________________
Period;)__________
_________________________________________________________
___AgNO3 + __Cu ----
+
3. How many grams of silver can be produced from 102.45 grams of AgNO3
4 How many atoms of copper will be needed to produce 3.6 moles of Cu(NO3) 2 ?
5.If 20 grams of AgNO3 and 10 grams of Cu are combined,
a) how many moles of Ag will be produced?
b) Which is the limiting reactant?