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Chemistry Semester TEST

Total questions: 98

Worksheet time: 2hrs 22mins

Name
Class
Date
1.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

2.

Elements in a .................. have similar chemical properties.

a)

period

b)

group

c)

row

3.

Which group of the periodic table is composed of inert (not reactive) gases?

answer choices

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

4.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
5.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
6.

Which element is similar to F?

a)

Ne

b)

Cl

7.

Which element is similar to He?

a)

H

b)

Ar

8.

Which element is the least reactive?

a)

Li

b)

Ne

c)

B

d)

C

9.

This group of elements sit along a stair step line on the periodic table and have properties of both metals and nonmetals. _________________________

a)

luster

b)

metals

c)

nonmetals

d)

metalloids

10.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
11.

You try it. What is the mass of one mole of Carbon atoms?

a)

6 grams

b)

6.02 x 1023

c)

12.01 grams

12.

You try it. One mole of NaF, sodium fluoride, will have a mass of

a)

41.99g

b)

20g

c)

41.99 amu's

d)

20amu's

13.

What is the mass of one mole of sodium oxide Na2O?

a)

about 62 grams

b)

30g

c)

30amu

d)

60amu

14.

What is the gram formula mass for Mg(OH)2?

a)

41.3g

b)

58.32g

c)

65.6g

15.

What is the mass of K?

a)

39

b)

19

c)

+1

d)

40

16.

What is the mass of Cl?

a)

-1

b)

17

c)

35

d)

12

17.

Based on the answers to the first two questions, K has a mass of 39 and Cl has a mass of 35, predict the mass of KCl?

4 lines
18.

How many Ba atoms are present in the compound Ba3(PO4)2

a)

2

b)

3

c)

4

d)

8

19.
What is the molar mass of one molecule of Nitrogen N2?
a)
14.01 amu
b)
14.01 g
c)
28.02 g
d)
28.02 amu
20.
What is the molar mass of Carbon Dioxide (CO2)?
a)
12 amu
b)
12 g
c)
44 g
d)
44 amu
21.

What is the metric base unit for mass?

a)

gram

b)

pound

c)

ounce

d)

liter

22.

Which of the following would be an example of a physical change?

a)

condensation forming on a mirror while showering

b)

an old iron gate rusting

c)

baking a cake

d)

frying an egg

23.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
24.
What is the molar mass of C2H4O2?
a)
40g
b)
50g
c)
60g
d)
68g
25.
NaCl
a)
58.5
b)
23
c)
35.5
d)
67.6
26.
Cs2SO4
a)
361.9
b)
361.8
c)
313.9
d)
180
27.
The molar mass of an element is equal to its...
a)
Atomic mass
b)
Atomic number
c)
Oxidation number
d)
Valence electrons
28.

What is the formula (molar) mass of AuCl3?

a)

96 g/mol

b)

130 g/mol

c)

232.5 g/mol

d)

303.5 g/mol

29.

What is the gram formula mass of sodium?

a)

11

b)

23

c)

16

d)

32

30.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
31.
What is the molar mass of C2H4O2?
a)
40g
b)
50g
c)
60g
d)
68g
32.
NaCl
a)
58.5
b)
23
c)
35.5
d)
67.6
33.

What does the Law of Conservation of Mass say? It says,


"During a chemical reaction, mass is neither _______ or destroyed."

a)

burned

b)

created

c)

melted

34.

The substances that go into a reaction are called the _______.

a)

products

b)

reactants

35.

So, the Law of Conservation of Mass would tell us that the mass of all the REACTANTS must __________ the mass of all PRODUCTS in a chemical reaction.

a)

equal

b)

be greater than

c)

be less than

36.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

37.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

38.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

39.

What is the little number after an element in a chemical equation called?

Example: H2

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

40.
How many Oxygens are in this molecule? 
(OH)2
a)
4
b)
1
c)
2
d)
3
41.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

42.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
43.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

44.

What coefficients are needed to balance the equation?

___Al + ___ O2 ---> 2Al2O3

a)

3,2

b)

3,4

c)

4 , 3

d)

4,2

45.

What coefficients are needed to balance the following chemical equation?

__Zn + __HCl → __ZnCl2 + __H2

a)

1,1,1,1

b)

1,2,1,1

c)

2,1,2,2

d)

2,1,2,1

46.

Which of the following chemical formulas are the reactants?

a)

CH4CH_4

b)

CH4  and  2O2CH_4\ \ and\ \ 2O_2

c)

CO2CO_2

d)

CO2  and 2H2OCO_2\ \ and\ 2H_2O

47.

Which of the following chemical formulas are the products?

a)

2O22O_2

b)

CH4 and 2O2CH_4\ and\ 2O_2

c)

CO2CO_2

d)

CO2 and 2H2OCO_2\ and\ 2H_2O

48.

How many hydrogen atoms are in the formula for glucose, C6H12O6 ?

a)

6

b)

12

c)

18

d)

24

49.

How many atoms of oxygen are in the chemical formula for sulfuric acid, H2SO4 ?

a)

1

b)

2

c)

3

d)

4

50.

How many atoms of oxygen are in the chemical formula for potassium carbonate?

2K2CO3

a)

2

b)

3

c)

4

d)

6

51.

How many atoms of hydrogen are on the reactant side of the balanced chemical listed below?

2H2O → 2H2 + O2

a)

1

b)

2

c)

3

d)

4

52.

How many atoms of oxygen are in the product side of the balanced chemical equation below?

H2SO4 + 2NaOH → 2H2O + Na2SO4

a)

2

b)

4

c)

6

d)

8

53.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
54.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
55.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
56.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
57.
How many electrons can the d sublevel hold?
a)
14
b)
10
c)
2
d)
6
58.
How many electrons can the s sublevel hold?
a)
14
b)
10
c)
2
d)
6
59.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
60.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
61.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
62.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
63.
What is the maximum number of electrons that an orbital can have?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
64.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
65.
This is the correct dot diagram for nitrogen, group 15.
a)
true
b)
false
66.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

67.

This could be the dot diagram of

a)

Si

b)

Br

c)

B

d)

S

68.

Which Lewis Dot Diagram would represent Chlorine?

a)
b)
c)
d)
69.

What element does this Lewis Dot Digram represent?

a)

Li

b)

Al

c)

C

d)

Be

70.

This is a correct dot diagram for oxygen (O)?

a)

true

b)

false

71.
How many electrons should Lithium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
72.

Boron has 3 valence electrons but it wants a full shell, what charge does it like to form?

a)

3-

b)

3+

c)

5-

d)

5+

73.
How many electrons should Carbon have around its Lewis dot model?
a)
1
b)
3
c)
4
d)
5
74.

Nitrogen has 5 valence electrons but wants a full shell. What charge does nitrogen tend to form?

a)

5+

b)

5-

c)

3+

d)

3-

75.

Oxygen has 6 valence electrons but wants a full shell. What charge does nitrogen tend to form?

a)

6+

b)

2-

c)

6-

d)

2+

76.

What is the atomic mass of Neon?

a)

10

b)

20.18

c)

10.18

d)

20

77.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
78.

What is the atomic mass of Copper?

a)

63.546

b)

29

c)

29.546

d)

92

79.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
80.

How many electrons does a Copper atom have?

a)

63

b)

29

c)

92

d)

34

81.

What is the atomic mass of Gold?

a)

79

b)

196.97

c)

79.97

d)

275

82.

What is the atomic mass of Helium

a)

4.0026

b)

2.0026

c)

4

d)

1

83.

How many electrons does an Iodine atom have?

a)

53

b)

126

c)

73

d)

179

84.

How many electrons are in a gold atom?

a)

79

b)

196

c)

117

d)

275

85.

What is the atomic weight of Iron?

a)

26

b)

55.845

c)

56

d)

30

86.

How many electrons does an atom of Krypton have?

a)

36

b)

83.798

c)

47.798

d)

119.798

87.

What does the topmost number (3) represent?

a)

Mass Number

b)

Atomic Number

c)

Atomic Mass

d)

Number of Neutrons

88.

How many neutrons does an Oxygen atom have?

a)

8

b)

16

c)

24

d)

7.999

89.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

90.
2 NH3+ 1 H2SO4 ----> 1 (NH4)2SO4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
91.
CaCO3 ----> CaO + CO2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
92.
Pb + FeSO4 ----> PbSO4 + Fe
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
93.
Na3PO4 + 3 KOH ----> 3 NaOH + K3PO4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
94.

Which type of chemical reaction has two or more reactants to make one product?

a)

combustion

b)

single displacement

c)

double displacement

d)

synthesis

e)

decomposition

95.

Identify the following chemical reaction.

2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

96.

Identify the following chemical reaction.

3 HBr + 1 Al(OH)3 ----> 3 H­2O + 1 AlBr3

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

97.

Identify the following chemical reaction.

Pb + FeSO4 ----> PbSO4 + Fe

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

98.

What reaction has the following general formula:

A + CD --> C + AD

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

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