WorksheetsChem Final Review
Total questions: 70
Worksheet time: 2hrs 8mins
Name
Class
Date
1.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
2.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
3.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
4.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
5.
How many atoms of Carbon are in the compound C2H8O ?
a)
8
b)
2
c)
1
d)
11
6.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
7.
2H2 + O2 --------> 2H2O What are the reactants?
a)
----->
b)
2H2O
c)
2H2 +O2
8.
Number of C's in CO
a)
1
b)
2
c)
3
d)
4
9.
The law of conservation of matter states that
a)
chemical reactions change matter.
b)
in chemical reactions, the identity of reactants and products is conserved.
c)
atoms are neither created nor destroyed in chemical reactions.
d)
a chemical equation must be balanced.
10.
Is this balanced?...
Al + O2 --> 2Al2O3
Al + O2 --> 2Al2O3
a)
YES!
b)
NO!
11.
In the equation 2Mg + O2 ---> 2MgO, which are the reactants?
a)
2Mg and O2
b)
2MgO
c)
Mg and 2MgO
d)
O and MgO
12.
Balance this equation:
2Li + Cl2 -> LiCl
2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
13.
Is this equation balanced: 2H2 + O2 →2H2O ?
a)
no
b)
yes
14.
Covalent bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
15.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
16.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
17.
Covalent bonds actually "share" electrons?
a)
true
b)
false
18.
How are covalent bonds formed?
a)
Sharing of electrons
b)
Transfer of electrons
19.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
20.
Is hydrogen considered a metal or a non-metal?
a)
A metal
b)
Nonmetal
c)
Metalloid
21.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
22.
What is the ionic compound formed between K and F?
a)
KF
b)
K2F
c)
KF2
d)
K2F2
23.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
24.
An electron has what kind of charge?
a)
no charge
b)
positive
c)
negative
d)
it depends
25.
Elements in the same _________ have the same number of valence electrons
a)
Row
b)
Group
c)
Metals
d)
Nonmetals
26.
What are ionic bonds?
a)
valence electrons transferred between atoms
b)
Inner most electrons transferred between atoms
27.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
28.
Atoms that lose electrons become...
a)
negatively charged
b)
postively charged
c)
remain neutral, no charge
d)
losers
29.
The attraction between oppositely charged ions is called a(n) _______________.
a)
ionic bond
b)
polyatomic ion
30.
Which of the following is nitrate?
a)
NO-
b)
NO2-
c)
NO3-
d)
NO4-
31.
Identify Cessium Nitrate
a)
CsNO3
b)
Cs2(NO3)3
c)
Cs2NO3
d)
Cs3NO3
32.
Identify Gallium Sulfate
a)
GaSO4
b)
Ga2(SO4)3
c)
Ga3(SO4)2
d)
Ga2SO4
33.
What is the name of K3PO4?
a)
Tripotassium Phosphate
b)
Tripotassium Phosphite
c)
Potassium phosphide
d)
Potassium phosphate
34.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
35.
What is the name of AgNO3? (hard mode)
a)
Silver Nitrate
b)
Silver Mononitrate
c)
Silver (I) Nitrate
d)
Monosilver Nitrate
36.
What is the name of Mg(OH)2?
a)
Magnesium Hydride
b)
Magnesium Dihydride
c)
Magnesium Dihydroxide
d)
Magnesium Hydroxide
37.
What is the name of H3PO4? (This molecule makes the slightly tangy taste in sodas)
a)
Hydrogen Phosphate
b)
Trihydrogen Phosphate
c)
Phosphoric Acid
d)
Triple Hydrogen PhosphoOxoPlutonide!!!
38.
Name Al2S3
a)
Aluminum sulfide
b)
Dialuminum trisulfide
c)
ammonium sulfide
d)
aluminum (II) sulfice
39.
What is the charge on the calcium ion?
a)
1+
b)
2+
c)
2-
d)
1-
40.
Which is a transition metal?
a)
cesium
b)
iron
c)
helium
d)
tellurium
41.
Identify the phosphide ion
a)
P5+
b)
P3+
c)
P3-
d)
P4-
42.
What is the name for the NO3- ion?
a)
nitrate ion
b)
nitrite ion
c)
nitrogan ion
d)
nitride ion
43.
Select the correct formula for sulfur hexachloride
a)
S2Cl6
b)
S6Cl
c)
SCl6
d)
SF6
44.
Name the compound NH4OH
a)
ammonium hydroxide
b)
ammonia oxyhydride
c)
mononitrogen tetraoxihydride
d)
hydrogen nitrate
45.
What is the formula for lead (II) carbonate?
a)
PbCO3
b)
Pb2CO3
c)
Pb(CO3)2
d)
Pb(CO)4
46.
What is the metallic ion in the compound CuCl?
a)
Cu1+
b)
Cu2+
c)
Cu1-
d)
Cu2-
47.
What is the formula for aluminum sulfite?
a)
Al3S2
b)
AlSO4
c)
Al3(SO4)2
d)
Al2(SO3)3
48.
Name the compound Mg3(PO4)2
a)
magnesium phosphate
b)
magnesium (III) phosphate
c)
magnesium phosphite
d)
magnesium phosphide
49.
Name the compound Fe(NO2)3
a)
iron nitrite
b)
iron (III) nitrate
c)
iron (III) nitrite
d)
ferric nitrite
50.
Name the compound CuO
a)
copper (II) oxide
b)
copper oxide
c)
copper (I) oxide
d)
carbon uranium oxide
51.
Name the compound SiCl4
a)
silicon tetrachloride
b)
sulfur tetrachloride
c)
silicon (IV) chloride
d)
silicon chloride
52.
Name the compound HOH
a)
hydrogen hydroxide
b)
hydrogen dioxide
c)
oxalic acid
d)
hydrogen oxalate
53.
Name the compound ClO2
a)
chlorite
b)
chlorate
c)
chlorine dioxide
d)
chlorine (II) oxide
54.
Which of these pH values represent an acid?
a)
4
b)
8
c)
10
d)
12
55.
If I add more chicken soup to this setup, what will happen to the pH?
a)
It will increase and get closer to 7
b)
It will decrease and get closer to 0
c)
It will stay the same and not change
56.
Milk is a very weak acid. What might its pH value be?
a)
6.5
b)
7.8
c)
4.2
d)
12.2
57.
When an acid is dissolved in water, it turns red litmus paper blue.
a)
True
b)
False
58.
The pH value of an acid represents its __________ of positive ions in the solution
a)
amount
b)
concentration
c)
color
d)
charge
59.
The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.
a)
True
b)
False
60.
HCl is a __________.
a)
Weak acid
b)
Strong acid
c)
Weak base
d)
Strong base
e)
Neutral
61.
Which compound is the conjugate acid? (Hint: Determine the base)
PO43- + HNO3 ==> NO3- + HPO42-
a)
PO43-
b)
HNO3
c)
NO3-
d)
HPO42-
62.
A solution of HCl has a [H+] = 7.2 x 10-9. Is this and acid or a base?
a)
Acid
b)
Base
63.
KOH has a pOH of 3.0, what is the [OH-]?
a)
0.01 M
b)
0.001 M
c)
0.0001 M
d)
0.1 M
64.
Acetic Acid (HC2H3O2) is a weak monoprotic acid. It's concentration is 0.20M and it's Ka value is 1.8x10 -5. Calculate it's pH value.
a)
.698
b)
2.72
c)
11.28
d)
None of the answers are correct
65.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
66.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
67.
2 CO (g) + O2(g) → 2 CO2 (g)
In the formation of CO2 from CO and oxygen, how many Liters of CO2 are produced by the reaction of 8 mols of O2 with an excess of carbon monoxide?
In the formation of CO2 from CO and oxygen, how many Liters of CO2 are produced by the reaction of 8 mols of O2 with an excess of carbon monoxide?
a)
0.178 L
b)
358.4 Liters
c)
704 grams
d)
0.36 grams
68.
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
69.
Fe (s) + S (l) --> FeS (s)
In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?
In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?
a)
14.8 g
b)
12.2 g
c)
13.7 g
d)
19.9 g
70.
N2 + 3H2 --> 2NH3
How many moles of N2 is needed to react with 6 moles of H2?
How many moles of N2 is needed to react with 6 moles of H2?
a)
6.7
b)
2.0
c)
3.0
d)
15.0
100 %
