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Module 5 - lesson 1 - Mastery Check (must do)

Total questions: 50

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

What is the chemical formula of sodium sulfate?

a)

SSO4

b)

SoSO4

c)

NaSO4

d)

Na2SO4

2.

What is the formula of Copper (II) oxide?

a)

CUO

b)

CuO

c)

CuO2

d)

Cu2O

3.

How many atoms are there in the compound MgCO3?

a)

3

b)

4

c)

5

d)

6

4.

The formula of sodium carbonate is

a)

NaCO3

b)

Na(CO3)2

c)

Na2CO3

d)

SCO3

5.

The formula of iron(II) hydroxide is

a)

FeOH2

b)

FeOH

c)

Fe(OH)2

d)

Fe(OH)3

6.

The formula of ammonium ion is

a)

NH3

b)

NH3+

c)

NH4

d)

NH4+

7.

How many atoms of sulfur are in each molecule of H2SO4?

a)

1

b)

4

c)

2

d)

7

8.

Alanine is an amino acid with formula C3H7NO2. How many atoms in all are in each molecule of alanine?

a)

3

b)

7

c)

12

d)

13

9.

Which of the following statements accurately describes the number of atoms in a molecule of ammonia - NH3?

a)

Three atoms of nitrogen and three atoms of hydrogen

b)

One atom of nitrogen and three atoms of hydrogen

c)

Three atoms of nitrogen and one atom of hydrogen

d)

One atom of nitrogen and one atom of hydrogen

10.

Which of the following accurately describes the molecular formula of the molecule shown above?

a)

3CH8O

b)

C3H7O

c)

C4H8O2

d)

C3H8O

11.

Which of the following molecules has the formula CH2O?

a)
b)
c)
d)
12.

How many different elements are in the formula CH3CH2Br?

a)

3

b)

5

c)

6

d)

2

13.

Which of the following chemical formulas contains exactly 4 hydrogen atoms?

a)

CH3COONa

b)

NH4OH

c)

CH3CH2Cl

d)

CH3CHO

14.

Which of the models best represents CaCO3?

a)
b)
c)
d)
15.

What is the correct name for this polyatomic ion: OH–

a)

hydrogen carbonate

b)

oxonium

c)

hydroxide

d)

acetate

16.

What is the correct name for this polyatomic ion: NO3–

a)

carbonate

b)

hydroxide

c)

nitrite

d)

nitrate

17.

What is the correct name for this polyatomic ion: PO43–

a)

phosphorus tetroxide

b)

phosphate

c)

sulphate

d)

hydroxide

18.

What is the correct formula for the polyatomic ion called hydrogen carbonate?

a)

HCO3–

b)

CO32–

c)

CrO42–

d)

CN–

19.

What is the correct formula for the polyatomic ion called sulphate?

a)

SO32–

b)

HSO4–

c)

SO42–

d)

CH3COO–

20.

What is the correct formula for the polyatomic ion called ammonium?

a)

NH3+

b)

NH3

c)

CN+

d)

NH4+

21.
Which of the following is nitrate?
a)
NO-
b)
NO2-
c)
NO3-
d)
NO4-
22.

Identify Caesium Nitrate

a)

CsNO3

b)

Cs2(NO3)3

c)

Cs2NO3

d)

Cs3NO3

23.
What is the name of Mg(OH)2?
a)
Magnesium Hydride
b)
Magnesium Dihydride
c)
Magnesium Dihydroxide
d)
Magnesium Hydroxide
24.
What is the name of NH4Cl?
a)
nitrogen tetrahydrogen chloride
b)
ammonium chlorine
c)
ammonium chloride
d)
ammonium chlorate
25.

Identify Gallium(III) Sulfate

a)

GaSO4

b)

Ga2(SO4)3

c)

Ga3(SO4)2

d)

Ga2SO4

26.

What is the name of AgNO3?

a)

Silver(III) Nitrate

b)

Silver Mononitrate

c)

Silver(I) Nitrate

d)

Monosilver Nitrate

27.

If copper(II) and phosphate bond together, the formula would be:

a)

Cu2(PO4)3

b)

CuPO4

c)

Cu3(PO4)2

d)

Cu3PO4

28.
Name the following ionic compound: MgSO4
a)
magnesium sulfoxide
b)
magnesium sulfide
c)
magnesium sulfate
d)
magnesium oxide
29.
Name the following ionic compound: LiNO3
a)
lithium nitrate
b)
lithium III nitrate
c)
lithium nitride
d)
lithium oxide
30.

Name the following ionic compound: Cr(SO4)3

a)

chromium sulfate

b)

chromium(III) sulfate

c)

chromium(II) sulfate

d)

chromium(VI) sulfate

31.

An element has 5 valence electron , what is its valency?

a)

4

b)

3

c)

2

d)

1

32.

Which of following has valency 2?

a)
b)
c)
d)
33.

what is valency of the given element?

a)

1

b)

2

c)

3

d)

4

34.
How many valence electrons are in an atom of Se?
a)
2
b)
8
c)
6
d)
5
35.
How many valence electrons are in an atom of Ba?
a)
2
b)
8
c)
4
d)
1
36.
How many valence electrons are in an atom of Ar?
a)
2
b)
8
c)
4
d)
1
37.
How many valence electrons are in an atom of K?
a)
3
b)
8
c)
4
d)
1
38.
How many valence electrons are in an atom of Sn?
a)
3
b)
8
c)
4
d)
1
39.
How many valence electrons are in an atom of P?
a)
4
b)
5
c)
2
d)
3
40.
How many valence electrons are found in atoms of group 1?
a)
7
b)
6
c)
4
d)
1
41.

What is the Valency of Radium?

a)

2+

b)

6-

c)

6+

d)

2-

42.
How many valence electrons are found in atoms of aluminum?
a)
6
b)
3
c)
13
d)
16
43.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
44.

Which of the following accurately describes the structural formula of the molecule shown above?

a)

3C8HOH

b)

CH3H2OH

c)

OHH2H2CH3

d)

CH3H2H2OH

45.

What is the correct charge for a Hydroxide ion? OH

a)

-1

b)

+1

c)

-2

d)

+2

46.

What is the correct charge on a Sulfate ion? SO4

a)

-1

b)

+1

c)

-2

d)

+2

47.

What is the correct charge on a Carbonate ion? CO3

a)

-1

b)

+1

c)

+2

d)

-2

48.

What is the correct charge on a Nitrate ion? NO3

a)

-1

b)

+1

c)

+2

d)

-2

49.

What is the correct charge on a Phosphate ion? PO4

a)

-4

b)

-3

c)

+3

d)

+4

50.

What is the correct charge on a Hydrogen carbonate ion? HCO3

a)

-1

b)

+1

c)

+2

d)

-2

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