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Chem 1015 Lab Final Review 2022

Total questions: 116

Worksheet time: 6hrs 1mins

Name
Class
Date
1.
a)
beaker
b)
flask
c)
graduated cylinder
d)
test tube
2.
a)
hot plate
b)
flame thrower
c)
heater
d)
bunsen burner
3.
a)
glass triangle
b)
funnel
c)
stirring rod
d)
buret
4.
a)
buret
b)
erlenmeyer flask
c)
graduated cylinder
d)
beaker
5.
a)
test tube rack
b)
test tube holder
c)
wire holder
d)
utility clamp
6.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
7.
How many sig. fig. are in the number below:
0.0005
a)
1
b)
2
c)
3
d)
4
8.
How many sig. fig. are in the number below:
350.540
a)
4
b)
5
c)
6
d)
7
9.

What is the reading on the graduated cylinder?

a)

30.5 ml

b)

3.5 ml

c)

3.05 ml

d)

35 ml

10.

What is the volume displacement of the hammer?

a)

3

b)

4

c)

5

d)

6

11.

What is the chemical symbol for Hydrogen

a)

H

b)

He

c)

Hy

d)

Hg

12.

What is the symbol for Potassium

a)

P

b)

Po

c)

K

d)

Pt

13.

Which element has the symbol Si

a)

Silicon

b)

Sulfur

c)

Scandium

d)

Strontium

14.

What is the symbol for Sodium

a)

S

b)

Au

c)

So

d)

Na

15.

How many electrons does a Copper atom have?

a)

63

b)

29

c)

92

d)

34

16.

How many neutrons does a Hydrogen atom have?

a)

1

b)

2

c)

3

d)

0

17.

How many electrons does an Iodine atom have?

a)

53

b)

126

c)

73

d)

179

18.

What does the topmost number (3) represent?

a)

Mass Number

b)

Atomic Number

c)

Atomic Mass

d)

Number of Neutrons

19.

What does the bottom most number (39.098) represent?

a)

Atomic number

b)

Atomic mass

c)

Number of protons

d)

Number of electrons

20.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
21.
Which elements are found on the left to middle of The Periodic Table? 
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Candles
22.
Which elements are found on the right side of The Periodic Table?
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Water
23.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
24.

This type of element loses its valence electrons easily.

a)

metal

b)

nonmetal

c)

metalloid

25.
What group of elements don't have individual names?
a)
Alkaline-earth Metals
b)
Transition Metals
c)
Alkali Metals
d)
Halogens
26.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
27.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
28.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
29.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
30.
Calculate the density of the cube.
a)
3 g/cm3
b)
4 g/cm3
c)
2 g/cm3
d)
5 g/cm3
31.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
32.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
33.
Is being able to melt physical or chemical
a)
physical
b)
chemical
c)
ducktile
d)
maluable
34.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
35.

What is a physical property of these strawberries?

a)

Red

b)

Rotten

c)

Flammable

36.
What is the percent by mass of oxygen in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
37.
What is the percent by mass of chlorine in NaCl?
a)
39%
b)
61%
c)
35%
d)
65%
38.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
39.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

40.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
41.

Balance the following equation:

___ SeCl6+ ___ O2→___ SeO2+____Cl2

a)

1, 1, 1, 3

b)

2, 1, 2, 1

c)

1, 2, 1, 2

d)

2, 2, 2, 4

42.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe2O3--> __Fe + __CO2
a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
43.

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
44.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
45.

What type of change is a change of phase?

a)

Physical

b)

Chemical

c)

Neither

d)

Both

46.

Is rust on a car physical or chemical?

a)

Physical

b)

Chemical

c)

Both

d)

Neither

47.
Evidence of a chemical reactions is anything that shows - 
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
48.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
49.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
50.
Fireworks Exploding are a ________ change.
a)
Physical Change
b)
Chemical Change
51.
What is the evidence of the chemical change seen here?
a)
Color change
b)
Light produced
c)
state change
d)
mixture
52.

Cutting your hair is an example of a ___________ change.

a)

physical

b)

chemical

53.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

54.

How many valence electrons does Magnesium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

55.

How many valence electrons does Phosphorus Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

56.

How many valence electrons does Sodium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

57.
Valence electrons are the...
a)
Innermost electrons
b)
Middle electrons
c)
Outermost electrons
d)
Any electrons
58.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

59.

1. The number of electrons removed to form magnesium ion.

a)

1

b)

2

c)

3

d)

4

60.

4. Which is the Lewis structure of sodium ion?

a)
b)
c)
d)
61.

5. Which is the Lewis dot symbol of sodium atom?

a)
b)
c)
d)
62.

6. Which is the Lewis dot symbol of aluminum atom?

a)
b)
c)
d)
63.

10. Which is the Lewis dot symbol of phosphorous atom?

a)
b)
c)
d)
64.
Protons and neutrons can be found:
a)
Inside the nucleus
b)
Orbiting the nucleus
c)
In the electron shell
65.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
66.
Nonmetals are
a)
usually cations
b)
likely to lose electrons
c)
usually negative ions
d)
all of these
67.
Each line in a Lewis Structure represents __________ electron(s).
a)
3
b)
2
c)
1
d)
4
68.

Is this the correct structure for CH2O?

a)

Yes

b)

No

69.

By replacing the element symbol, this could be a diagram of which element?

a)

Li

b)

Al

c)

C

d)

Be

70.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
71.

Which image could be a representation of NH3?

a)

A

b)

B

c)

C

72.
?
a)
Boron
b)
Carbon
c)
Nitrogen
d)
Lithium
73.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
74.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
75.

Which is the correct Lewis structure for carbon dioxide?

a)
b)
c)
d)
76.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
77.

What is the formula for the Aluminium ion?

a)

AL1+

b)

Al2+

c)

Al 3+

d)

al 2-

78.

What is the formula for the Oxide ion?

a)

O7 2-

b)

O2 2-

c)

O 2-

d)

O3 2-

79.

What is the formula for the Phosphide ion?

a)

P2-

b)

P1-

c)

P3-

d)

P4-

80.

What chemical will be formed from the combination of a hydrogen ion (H+) and a hydroxide ion (OH-)?

a)

Hydrogen Peroxide

b)

Table Salt

c)

Table Sugar

d)

Water

81.

Iron(II) oxide would be written in formula form as

a)

Cannot be determined

b)

Fe3O2

c)

FeO

d)

Fe2O3

82.

The Stock naming system is used for:

a)

Ionic compounds

b)

Molecular compounds

c)

Both

d)

None

83.

Name the following ionic compound: LiNO3

a)

lithium nitrate

b)

lithium III nitrate

c)

lithium nitride

d)

lithium nitrogen oxide

84.
What is the charge on a chloride ion?
a)
-1
b)
1
c)
+2
d)
+1
85.

Which of the following equations is Nickel (II) nitrite ?

a)

Ni2NO2

b)

Ni(NO2)2

c)

Ni(NO3)2

d)

Ni3N2

86.

Which of the following elements will form a cation?

a)

Arsenic

b)

Copper

c)

Bromine

d)

Fluorine

87.

Which of the following will form an anion?

a)

Titanium

b)

Iron

c)

Calcium

d)

Sulfur

88.

Cations

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

89.

Anions

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

90.

Describe the anion S2-

a)

Silicon that gained 2 electrons

b)

Sulfide that gained 2 electrons

c)

Sulfur that gained 2 electrons

d)

Strontium that gained 2 electrons

91.

What is the formula for copper(I) sulfate?

a)

CuSO3

b)

CuSO4

c)

Cu2SO3

d)

Cu2SO4

92.

What's the formula for iron (II) nitride?

a)

Fe3N2

b)

Fe2N3

c)

Fe2NO2

d)

FeN

93.

A substance that is capable of acting as both an acid and as a base is __________.

a)

autosomal

b)

conjugated

c)

saturated

d)

amphoteric

94.

A pH of 3 is how many times more acidic than a pH of 5?

a)

2

b)

20

c)

10

d)

100

95.

What does pH measure?

a)

the amount of hydrogen (H+) ions

b)

the amount of hydroxide (OH-) ions

c)

amount of water

d)

all of the above

96.

A solution has 1.0 x 10-8 M hydronium ions. Another solution has 1.0 x 10-3 M hydronium ions. Which solution has a larger number of hydronium ions? Hint this solution is an acid.

a)

1.0 x 10-3 M hydronium ion solution

b)

1.0 x 10-8 M hydronium ion solution

c)

Neither solution is an acid

97.

If a solution has a [H+] of 1x10-9M , what is the pH?

a)

10.0

b)

4.0

c)

9.0

d)

8.2

98.
Buffer is defined as
a)
ability to resist pH change
b)
ability to prevent pH from decreasing
c)
ability to resist a pH increase
d)
ability to resist pH change when small amount of acid added
99.

A substance that conducts an electrical current when dissolved in water is called

a)

catalyst

b)

metalloid

c)

electrolyte

d)

nonelectrolyte

100.

Which of the following is not an electrolyte?

a)

KBr

b)

LiOH

c)

RbNO3

d)

CH4

101.

Which of the following best describes the components and properties of electrolytes? Electrolytes consist of –

a)

ions and are conductive

b)

metals and are non-polar

c)

nonmetals and are anions.

d)

covalent bonds and are polar

102.

In order for a solution to be an electrolyte, the solute must

a)

be a molecular compound.

b)

restrict the flow of electricity.

c)

create a saturated solution.

d)

consist of positive and negative ions

103.

Which of the following, when dissolved in water, would create a nonelectrolyte?

a)

C2H6O

b)

NH4NO3

c)

NaOH

d)

BaCl2

104.

What is Electrolysis ?

a)

Chemical decomposition due to passage of light through solutions of ionic compounds.

b)

Chemical decomposition due to passage of electricity through solution of ionic compounds.

c)

Chemical decomposition due to passage of heat through solution of ionic compounds.

d)

All of the above

105.

The name given to the positive electrode is called ?

a)

Cathode

b)

Anode

c)

Anion

d)

Cation

106.

The name given to the negative charged electrode is called ?

a)

Anode

b)

Cathode

c)

Anion

d)

Cation

107.

During the electrolysis, which of the following Electrodes will Sodium Ions ( Na+) got attracted to ?

a)

Anode

b)

Cathode

c)

All of the anove

d)

Non of the above

108.

During electrolysis, Which of the following electrodes will Bromide ions ( Br-) got attracted to?

a)

Anode

b)

Cathode

c)

All of the above

d)

Non of the above.

109.

Which particles are responsible for conduction of electricity in electrolyte ?

a)

Free moving electrons

b)

Free moving ions

c)

Free moving proton

d)

Excess neutron

110.
If the pH of a solution is 9, it is a....
a)
acid
b)
base
c)
both
d)
none
111.
Which of the following substances is basic?
a)
Apple juice
b)
Ginger ale
c)
Baking soda
d)
Distilled water
112.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
113.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
114.
Which of the following is an acid?
a)
Ammonia
b)
Drain cleaner
c)
Shampoo
d)
Orange
115.
What color does acid turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns red litmus paper blue.
c)
It turns blue litmus paper blue.
d)
It turns blue litmus paper red.
116.
What color does bases turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns blue litmus paper red.
c)
It turns red litmus paper blue.
d)
It turns red litmus paper re

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