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Chem 1 Unit 3 Review

Total questions: 80

Worksheet time: 4hrs 38mins

Name
Class
Date
1.

Nitrate

a)
NO-
b)
NO2-
c)
NO3-
d)
NO4-
2.

OH–

a)

hydrogen carbonate

b)

oxonium

c)

hydroxide

d)

acetate

3.

PO43–

a)

phosphorus tetroxide

b)

phosphate

c)

sulphate

d)

hydroxide

4.

Sulfate

a)

SO32–

b)

HSO4–

c)

SO42–

d)

CH3COO–

5.

Ammonium

a)

NH3+

b)

NH3

c)

CN+

d)

NH4+

6.

Phosphate

a)

PO3-

b)

PO34-

c)

PO43-

d)

PO43+

7.

Carbonate

a)

Cr2O42-

b)

CH3COO-

c)

CO32-

d)

CN-

8.

Acetate

a)

C4H2O3-

b)

Ac2H22-

c)

C2O4-

d)

C2H3O2-

9.

NH4+

a)
ammonium
b)
acetate
c)
sulfate
d)
arsenate
10.

NO3-

a)
ammonium
b)
nitrite
c)
nitrate
d)
nitrile
11.

C2H3O2-

a)
Ammonium
b)
acetite
c)
acetate
d)
arsenate
12.

CO32-

a)
bicarbonate
b)
carbonite
c)
carbonate
d)
chlorite
13.

SO42-

a)
Sulfite
b)
Sulfide
c)
Sulfate
d)
hydrogen sulfate
14.

Hydrogen Carbonate (bicarbonate)

a)

HCO3–

b)

CO32–

c)

CrO42–

d)

CN–

15.
Cyanide
a)
CrO4-2
b)
Cr2O4-2
c)
CO3-2
d)
CN-
16.

Name the following compound - Be(HCO3)2

a)

beryllium hydrogen carbon oxide

b)

beryllium (II) bicarbonate

c)

bicarbonate beryllium

d)

beryllium bicarbonate

17.

Determine the formula for the compound - vanadium(III) sulfide

a)

V3S2

b)

VS

c)

V2S3

d)

VSO4

18.

Name the following compound - Mn3As7

a)

manganese (III) arsenide

b)

manganese arsenide

c)

manganese (VII) arsenide

d)

manganese (I) arsenide

19.

Name the following compound - Sr(C2H3O2)2

a)

strontium acid

b)

strontium acetate

c)

scandium acetate

d)

strontium (II) acetate

20.

Name the following compound - GaCl3

a)

gallium carbon iodide

b)

gallium chlorine

c)

gallium (III) chloride

d)

gallium chloride

21.

Determine the formula for the compound - cobalt (III) chromate

a)

Ca2(CrO4)3

b)

Co2Cr2O7

c)

Co2Cr

d)

Co2(CrO4)3

22.

Name the following compound - (NH4)2SO4

a)

ammonium (I)

sulfate

b)

ammonium (II)

sulfate

c)

ammonium sulfate

d)

hydronium sulfate

23.

Determine the formula for the compound - iron (III) phosphate

a)

FeP

b)

FePO4

c)

FePO3

24.

Name the following compound - KOH

a)

potassium hydrogen

b)

potassium hydroxide

c)

potassium hydride

25.

Name the following compound - PtS

a)

platinum sulfur

b)

platinum (I) sulfide

c)

platinum sulfide

d)

platinum (II) sulfide

26.

An ionic bonds forms between a ____________?

a)

metal and nonmetal

b)

2 metals

c)

nonmetal and metalloid

d)

2 nonmetals

27.

Determine the formula for the compound - nickel (III) sulfide

a)

Ni3S2

b)

NiS

c)

Ni2S3

d)

Ni2(SO4)3

28.

Name the following ionic compound: BeCl2

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

29.

Name the following ionic compound: Cs2S

a)

cesium sulfide

b)

cesium sulfate

c)

cesium II sulfate

d)

cesium II sulfide

30.

LiBr is called

a)

lithium bromine

b)

lithium (I) bromine

c)

lithium bromide

d)

lithuim (I) bromide

31.

Name the ionic compound SnSe2

a)

Tin diselenide

b)

Tin (IV) Selenide

c)

Tin selenide

d)

Tin (II) triselenide

32.

The name of the compound Ca3(PO4)2

a)

calcium phosphate

b)

tricalcium diphosphate

c)

calcium phosphorus oxide

d)

calcium phosphide

33.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
34.
silicon dioxide
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
35.
diphosphorus pentoxide
a)
P2O5
b)
PO5
c)
P5O2
d)
P2O6
36.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
37.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
38.
The chemical formula of carbon tetrachloride is
a)
CCl
b)
C₄Cl
c)
CCl₄
d)
C(IV)Cl
39.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
40.
The name of P₄S₁₀ is
a)
phosphorous sulfide
b)
phosphorus sulfide
c)
tetraphosphorus decasulfide
d)
phosphorus (X) sulfide
41.
The chemical formula of tetraphosphorus heptaoxide is
a)
F₄O₁₀
b)
P₄O7
c)
PO
d)
P₁₀O₄
42.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
43.
The name of SO₃ compound is
a)
sulfate
b)
sulfur oxide
c)
sulfur trioxide
d)
monosulfur trioxide
44.

Is Fe2 a diatomic element?

a)

Yes

b)

No

45.

Is O2 a diatomic element?

a)

Yes

b)

No

46.

What are the seven diatomic elements?

a)

H2, Cl2, Br2, O2, N2, I2, F2

b)

H2, Cl2, I2, F2, Hg2, Br2, Fe2

c)

H2, Cu2, Ni2, B2, O2, I2, Fe2

47.

What is the percent by mass of oxygen in MgO? Hint: The attached image is an example of a worked problem other than this one.

a)

20%

b)

40%

c)

50%

d)

60%

48.
What is the percent by mass of magnesium in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
49.
What is the percent by mass of fluorine in CaF2 (gram-formula mass = 78 g/mol)?
a)
24%
b)
49%
c)
51%
d)
65%
50.
What is the percent composition of Benzene, C6H6?
a)
C = 50%
H = 50%
b)
C = 85.7 %
H = 14.3%
c)
C = 92.2%
H = 7.8%
d)
C = 71.9%
H = 28.1%
51.
What is the empirical formula for the following:
Pb5Cr5O20
a)
Pb2Cr2O10
b)
PbCr2O7
c)
Pb9Cr4O2
d)
PbCrO4
52.

What is the empirical formula for C4H6?

a)

CH

b)

CH3

c)

C2H3

d)

C4H6

53.

What is the empirical formula for N2S3?

a)

NS

b)

N3S2

c)

N2S3

d)

N1S1.5

54.

What type of reaction is Fe + Cl2 → FeCl3

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

55.

What type of reaction is C2H2 + O2 → CO2 + H2O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

56.

What type of reaction is BF3 + Li2SO3 → B2(SO3)3 + LiF

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

57.

What type of reaction is Ag2O → Ag + O2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

58.

What type of reaction is C5H10 + O2 → CO2 + H2O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

59.

What type of reaction is Zn + HCl → H2 + ZnCl2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

60.

What type of reaction is H2 + N2 → NH3

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

61.

What type of reaction is (NH2)3PO4 + Pb(NO3)4 → NH4NO3 + Pb3(PO4)4

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

62.

What type of reaction is FeBr3 + H2SO4 → HBr + Fe2(SO4)3

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

63.

What type of reaction is Fe + H2SO4 → H2 + FeSO4

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

64.

Indicate the respective coefficients needed to balance the chemical equation.

N2O5(s) + NO(g) → NO2(g)

(a)  

65.

Indicate the respective coefficients needed to balance the chemical equation.

NaOH(aq) + Cl2(aq) → NaCl(aq) + NaClO(aq) + H2O(l)

(a)  

66.

Indicate the respective coefficients needed to balance the chemical equation.

NO2(g) + H2O(l) → HNO3(aq) + NO(g)

(a)  

67.

Indicate the respective coefficients needed to balance the chemical equation.

Mg(s) + Cr2(SO4)3(aq) → MgSO4(aq) + Cr(s)

(a)  

68.

Indicate the respective coefficients needed to balance the chemical equation.

NaCl(aq) + H2O(l) → NaOH(aq) + H2(g) + Cl2(g)

(a)  

69.

Indicate the respective coefficients needed to balance the chemical equation.

C2H6(g) + O2(g) → H2O(l) + CO2(g)

(a)  

70.

Indicate the respective coefficients needed to balance the chemical equation.

Cl2(g) + CH4(g) → CCl4(l) + HCl(s)

(a)  

71.
KNO3 --> KNO2 + O2
What coefficients are needed to balance the reaction?
a)
2, 2, 1
b)
2, 3, 2
c)
1, 2, 2
d)
1, 3, 1
72.
2H2   +   O2  →  2H2O
How many moles of water can be produced if 8 moles H2 are used?
a)
4 moles
b)
8 moles
c)
16 moles
d)
2 moles
73.
2H2  +   O2  →  2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2
b)
4
c)
6
d)
8
74.

___KNO3 → ___KNO2 + ___O2

What coefficients are needed to balance the reaction?

a)

2, 2, 1

b)

2, 3, 2

c)

1, 2, 2

d)

1, 3, 1

75.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
76.
Using the following equation:
4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(l)
How many grams of oxygen gas are needed to react with 56.8 grams of ammonia?
a)
45.08 g O2
b)
133.33 g O2
c)
260.77 g O2
d)
75.92 g O2
77.
2Na + 2H2O → 2NaOH+ H2
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
78.
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?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
79.
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?
a)
14.8 g
b)
12.2 g
c)
13.7 g
d)
19.9 g
80.
Using the following equation:
4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(l)
How many grams of oxygen gas are needed to react with 56.8 grams of ammonia?
a)
45.08 g O2
b)
133.33 g O2
c)
260.77 g O2
d)
75.92 g O2

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