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Unit 2 Test Review

Total questions: 176

Worksheet time: 26hrs 53mins

Name
Class
Date
1.

What below is NOT considered matter?

a)

Carbon atoms

b)

Gravity

c)

Bacteria

d)

Air

2.

Matter is anything that.....

a)

Has mass and takes up space

b)

Has mass and is visible

c)

Takes up space and has energy

d)

Has energy and is visible

3.

What particle view below is a mixture?

a)

b)

c)

d)

4.

What is the best classification for this substance?

a)

An element

b)

A compound

c)

A mixture

5.

Is this a pure substance?

a)

Yes

b)

No

6.

What is the best classification of this substance?

a)

An element

b)

A compound

c)

A mixture of 2 elements

d)

A mixture of 2 compounds

7.

What is the best classification of this substance? H2SO4

a)

An element

b)

A compound

c)

A mixture

8.

What is the best classification of this substance? CO2 & H2S

a)

An element

b)

A compound

c)

A mixture of 2 compounds

d)

A mixture of many elements

9.

What is an example of a physical property?

a)

Silver is shiny

b)

Alcohols are flammable

c)

Alkali metals are reactive with water

d)

Acids are sometimes corrosive

10.

What is an example of a chemical change?

a)

Tearing paper

b)

Dissolving salt in water

c)

Melting ice

d)

Burning wood

11.

Does this particle view show an element or a compound?

a)

element

b)

compound

12.

Is this image showing a homogeneous or a heterogeneous mixture? Image: Cesar salad

a)

homogeneous

b)

heterogeneous

13.

Is this image showing a homogeneous or a heterogeneous mixture? Image: Milk

a)

homogeneous

b)

heterogeneous

14.

Does this image represent a chemical or a physical change?

a)

Chemical change

b)

Physical change

15.

Does this image represent a chemical or physical change?

a)

Chemical change

b)

Physical change

16.

Which below shows a CHEMICAL change?

a)

b)

c)

17.
You know that 12 inches = 1 foot.  Convert 60 inches to feet.
a)
720 feet
b)
5 feet
c)
5 inches
d)
72 feet
18.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)
2500 mg
19.
You know 16 cups = 1 gallon. Convert 3.5 gallons into cups.
a)
56 cups
b)
0.21875 cups
c)
19.5 cups
d)
48 cups
20.
How many minutes are in a year?
a)
I can't count that high.
b)
525,600min
c)
52,560min
d)
31,536,000min
21.
How many gallons are in a pool that holds 758,000 Liters?
(1 gallon = 3.79 Liters)
a)
200
b)
20,000
c)
200,000
d)
2,000,000
22.
Elijah earn $200 for 8 hours of work. What is the unit rate (in dollars per hour)?
a)
$50 per hour
b)
$12 per hour
c)
$192 per hour
d)
$25 per hour
23.
A passenger jet has a speed of 900 km/h.
What is its speed in m/s?
(1 km = 1000 m)
a)
250 m/s
b)
324 m/s
c)
1,500 m/s
d)
2,500 m/s
24.
A bicycle has a speed of 6 m/s. What is its speed in km/h?  (1 km=1000 m)
a)
21.6 km/h
b)
16.67 km/h
c)
2.16 km/h
d)
1.67 km/h
25.
Complete the statement:
5 cm/min = ______ m/day
(100 cm = 1 m)
a)
72
b)
840
c)
7.2
d)
5,040,000
26.
The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)
a)
0.867 ft
b)
7.8 ft
c)
8.07 ft
d)
8.27 ft
27.

Americans drink 5,604,000 gallons of sweet tea each day. How many liters is that? (1 gal = 3.79 L)

a)

21,200,000 L

b)

21,240,000 L

c)

21,207,190.2 L

d)

21,000,000 L

28.

You know 1000 mg = 1 g. Convert 2.5 grams into milligrams. (Hint: You can Bunny Hop this one!)

a)

25 mg

b)

25,000 mg

c)

250 mg

d)

2500 mg

29.

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

a)

32 people

b)

32 minutes

c)

12.5 minutes

d)

12.5 people

30.

How many kilograms of calcium are there in 173 pounds of calcium? (1 lb = 454 g; 1 kg = 1000 g)

a)

1.10 kg

b)

78.5 kg

c)

110 kg

d)

78500 kg

31.

How many minutes are in a school year, 187 days?

a)

269,280 min.

b)

16, 200 min.

c)

16, 156 min.

d)

269,000 min.

32.

Convert 62 miles/hour to feet/second. (5,280 ft = 1 mi)

a)

5,456 ft/s

b)

.003 ft/s

c)

91 ft/s

d)

909 ft/s

33.
Gas costs $3.05 a gallon, and your car travels at 27 miles for each gallon of gas. How far can you travel in your car with $95 in your pocket?
a)
11 miles
b)
840 miles
c)
7800 miles
d)
870 miles
34.

A child weighs 40.0 lb and is to receive 0.10 mg of an antibiotic for each kg of body weight. How many milligrams of the antibiotic shall the child receive? (1 kg = 2.2 lbs)

a)

18.2 mg

b)

182 mg

c)

0.182 mg

d)

1.82 mg

35.

Which conversion fraction would be needed from this starting amount?

a)
b)
c)
36.

All conversion factors are equal to _______.

a)

zero

b)

one

c)

ten

d)

original units

37.

If you are converting 490 grams to pounds, which 2 of the following conversion factors would you use?

a)

28.3 grams = 1 ounce

b)

16 ounces = 1 lb.

c)

1 lb = 0.45 kg

d)

1 kg = 2.2 lbs

38.

How many protons does lithium have?

a)

3

b)

4

c)

7

39.

What charge does an atom have when it GAINS electrons?

a)

Positive

b)

Negative

c)

Neutral

40.

What is a representation of an ion?

a)

Li

b)

Na-22

c)

O-2

41.

What is the mass number of bromine?

a)

35

b)

45

c)

80

d)

79.904

42.

How many neutrons does this bromine atom have?

a)

35

b)

45

c)

80

43.

What two particles determine the mass number?

a)

Protons and electrons

b)

Electrons and neutrons

c)

Protons and neutrons

44.

What is the mass number of this Neon atom?

a)

10

b)

11

c)

21

d)

20

45.

How many neutrons does this Neon atom have?

a)

21

b)

11

c)

10

d)

12

46.
An ion forms when an atom gains or loses
a)
Protons
b)
Neutrons
c)
Electrons
47.
A neutral atom would become an ion that has a charge of 2+ by 
a)
Losing two protons
b)
Losing two neutrons
c)
Losing two electrons
48.

What is the atomic number of Neon?

(a)  

49.

How many protons does an atom of Gallium have?

(a)  

50.

How many electrons in a neutral lithium atom?

a)

3

b)

7

c)

4

d)

1

51.

How many electrons in an oxygen ion (O-2)?

a)

8

b)

7

c)

10

d)

16

52.

How many protons in a neutral aluminum atom?

a)

13

b)

27

c)

16

d)

10

53.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
54.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
55.

How many electrons in a nitrogen ion (N-3)?

a)

14

b)

7

c)

10

d)

4

56.

How many electrons in a neutral nitrogen atom?

a)

14

b)

7

c)

10

d)

4

57.

How many protons in a nitrogen ion (N-3)?

a)

14

b)

7

c)

10

d)

4

58.

How many protons in a neutral calcium atom?

a)

20

b)

40

c)

18

d)

22

59.

How many electrons in a neutral calcium atom?

a)

20

b)

40

c)

18

d)

22

60.

How many electrons in a calcium ion (Ca+2)?

a)

20

b)

40

c)

18

d)

22

61.

How many protons in a calcium ion (Ca+2)?

a)

20

b)

40

c)

18

d)

22

62.

The nucleus is the center of the atom. Which two parts does it contain? Choose all that are correct.

a)

Protons

b)

Neutrons

c)

Electrons

63.

What type of charge does a neutron have?

a)

Positive

b)

Negative

c)

No charge

64.

Which element has 4 protons and 4 electrons? (Use the atomic number to help you choose the correct answer.)

a)
b)
c)
65.

Which of these are parts of the atom?

a)

Protons, ProAthletes, Neutrons

b)

Neutrons, Protons, Electrons

c)

Mitochondria, Electrons, Protons

d)

Oxygen

66.

Which of these has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Oatmeal

67.

Which charge does a proton have?

a)

Neutral

b)

Negative

c)

No charge- battery is dead

d)

Positive

68.

Neutrons have a ____________ charge.

a)

Neutral, or no charge

b)

Positive

c)

Negative

d)

Neutron? I don't know what that is!

69.

True or false: Atoms make up everything around you.

a)

True

b)

False

70.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
71.

Letter A is showing

a)

Neutrons

b)

Electrons

c)

Protons

d)

Nucleus

72.

What subatomic particle is found in the electron cloud?

a)

Neutrons

b)

Electrons

c)

Protons

d)

none

73.

Which subatomic particles make up the mass of an atom?

a)

protons only

b)

protons and neutrons

c)

protons, neutrons and electrons

d)

protons and electrons

74.

The region inside an atom where electrons are likely to be found

a)

Proton

b)

Atom

c)

Electron Cloud

d)

Neutron

75.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

76.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

77.

Nickel-59 has how many neutrons?

a)

30

b)

31

c)

32

d)

33

78.

Bromine-80 has how many neutrons?

a)

41

b)

42

c)

44

d)

45

79.

76 protons and 114 neutrons

a)

Osmium-114

b)

Osmium-76

c)

Osmium-190

d)

Osmium-190.23

80.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

81.

9 protons and 9 neutrons

a)

Fluorine-18

b)

Fluorine-9

c)

Fluorine-16

d)

Fluorine-18.998

82.

Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium?

a)

85.468 amu

b)

37 amu

c)

85.6 amu

d)

86.4 amu

83.

There are two primary isotopes found in any sample of copper: copper-63 and copper-65. The isotope 65Cu composes 69.2% of the sample and 63Cu comprises the other 30.8%. Based on this data, what is the atomic mass of copper?

a)

29 amu

b)

63.546 amu

c)

64.4 amu

d)

63.6 amu

84.

How do you calculate mass number?

a)

Mass x percent

b)

Protons + Electrons

c)

Protons + Neutrons

d)

Neutrons + Protons + Electrons

85.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
86.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
87.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
88.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
89.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
90.
Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.
a)
n0 ;  atomic #’s
b)
p+ ; atomic #’s
c)
e- ; atomic masses
d)
n0 ; atomic masses
91.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
92.
If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. 7735X  II. 7733X  III. 8137X  IV. 8135 X
a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
93.
How many neutrons does an atom of the isotope Neon-22 have?
a)
12
b)
10
c)
22
d)
20
94.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
95.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
96.
Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.
a)
true
b)
false
97.
If the number of electrons in an atom changes you make a(n) __________________.
a)
ion
b)
isotope
c)
new element
d)
isomer
98.
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
99.
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
a)
34
b)
36
c)
2
d)
40
100.
A nuclear reaction where a nucleus splits into two smaller nuclei is... 
a)
Fission
b)
Fusion
c)
Gamma decay
d)
Beta decay
101.
What happens when the number of protons in an atom changes? 
a)
The number of electrons changes too 
b)
Usually nothing happens, unless the atom is radioactive 
c)
The atomic nucleus explodes
d)
It becomes a completely different atom, with different properties 
102.
In what part of an atom can protons be found? 
a)
Inside the electrons
b)
Inside the neutrons 
c)
Inside the atomic nucleus 
d)
 Inside the electron shells
103.
What element is the ?
a)
Ag-115
b)
Cd-115
c)
Pd-115
d)
Not Listed
104.
Which type of nuclear radiation is being emitted here?
a)
alpha
b)
beta
c)
gamma
d)
none
105.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
106.
Balance the following equation:
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
107.
Two or more nuclei combine to form one larger nucleus in the process of nuclear _____.
a)
Fusion
b)
Fission
c)
Tracing
d)
Decay
108.
This is an example of...
a)
Fission  reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Combustion
109.
When nuclei decay, massive amounts of __________ is released.
a)
energy
b)
jello
c)
protons
d)
neutrons
110.
What type of reaction is this?
a)
alpha
b)
beta
c)
gamma
d)
quiet
111.
Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
112.
Has the lowest penetrating power.  Can only penetrate 0.05 mm into the body and can be stopped by a piece of paper or clothing.
a)
Alpha
b)
Beta
c)
Gamma
113.
What type of nuclear reaction is this?
a)
alpha
b)
beta
c)
gamma
d)
hot
114.
If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:
a)
16
b)
32
c)
48
d)
64
115.
The time needed for half of a radioactive sample to decay is called its __________.
a)
decay period
b)
period
c)
transmutation time
d)
half-life
116.
Gamma rays damage human cells/tissue.
a)
True
b)
False
117.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
118.
After the third half-life, how much of the sample is left?
a)
1/2
b)
1/3
c)
1/16
d)
1/8
119.
The half life of iodine-131 is 8 days. What fraction of an iodine-131 sample will remain after 40 days?
a)
1/2
b)
1/64
c)
1/5
d)
1/32
120.
Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?
a)
0.25g
b)
2.5g
c)
25g
d)
80g
121.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
122.
Physical or Chemical?  Water is nonflammable
a)
Physical
b)
Chemical
c)
Neither
123.
Physical or Chemical Property? If copper comes in contact with water, it will turn green.
a)
Physical
b)
Chemical
c)
Neither
124.
Physical or Chemical Property?  The temperature of boiling water is 100 degrees Celsius.
a)
Physical
b)
Chemical
c)
Neither
125.
Physical or Chemical Property?  The solid form of water is ice.
a)
Physical
b)
Chemical
c)
Neither
126.
Define a Chemical Property
a)
A property which depends on the objects size or matter.
b)
A property of matter not involving in its manifestation a chemical change
c)
A property or behavior of a substance which undergoes a chemical change or reaction.
d)
A property which makes the object smell or taste different.
127.
Boiling point,melting point, and density are some of an element's
a)
pure properties
b)
physical properties
c)
chemical properties
128.
A mixture that appears to be evenly mixed throughout:
a)
an atom
b)
a compound
c)
a homogeneous mixture
d)
a heterogeneous mixture
129.
 mixture that does NOT appear to be evenly mixed throughout:
a)
an atom
b)
a compound
c)
a homogeneous mixture
d)
a heterogeneous mixture
130.
Which of these is an example of a chemical property?
a)
density
b)
melting point
c)
ductility
d)
flammability
131.
Can a mixture be separated? 
a)
No
b)
Yes
c)
Only sometimes
132.
An example of a physical change would be a change in...
a)
Color
b)
Shape
c)
Size
d)
All of the above 
133.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
134.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

135.

Transition from a solid to a liquid

a)

Condensation

b)

Melting

c)

Freezing

d)

Evaporation

136.

Transition from a liquid to a gas

a)

Condensation

b)

Freezing

c)

Evaporation/Boiling

d)

Melting

137.

Transition from a liquid to a solid

a)

Freezing

b)

Sublimation

c)

Melting

d)

Evaporation

138.

Gas changes to a liquid

a)

Evaporation

b)

Melting

c)

Freezing

d)

Condensation

139.

Change of a solid directly into a gas

a)

Deposition

b)

Melting

c)

Sublimation

d)

Freezing

140.

Change of a gas directly into a solid

a)

Sublimation

b)

Condensation

c)

Evaporation

d)

Deposition

141.

This is an example of

a)

Freezing

b)

Melting

c)

Condensation

d)

Sublimation

142.

This is an example of

a)

Melting

b)

Condensation

c)

Freezing

d)

Evaporation

143.

This is an example of

a)

Condensation

b)

Evaporation

c)

Sublimation

d)

Melting

144.

This is an example of

a)

Deposition

b)

Condensation

c)

Melting

d)

Boiling

145.

This is an example of

(Hint: Dry Ice)

a)

Deposition

b)

Sublimation

c)

Freezing

d)

Melting

146.

This is an example of

a)

Melting

b)

Sublimation

c)

Deposition

d)

Condensation

147.

Which is not a separation technique?

a)

Filtrating

b)

Distillating

c)

Evaporating

d)

Dissolving

148.

What method would you use to separate a mixture of salt and water so that you can get keep the salt AND the water?

a)

sorting by hand

b)

distillation

c)

chromatography

149.

Dyes in a felt-tip pen may be separated by....

a)

Distillation

b)

Decanting

c)

Chromatography

d)

Centrifuge

150.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
dissolving
c)
evaporation
d)
decanting
151.

What is the name of this separation technique?

a)

Simple distillation

b)

Chromatography

c)

Boiling

d)

Evaporation

152.

What is the name of this separation technique?

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

153.

How would you separate the substances shown in the picture (oil and water)?

a)

by sieving

b)

by decanting

c)

by distillation

d)

by filtering

154.

a)

Distillation

b)

Centrifugation

c)

Filtration

d)

Chromatography

155.

Which scientist was the first person responsible for proposing the discovery of the nucleus?

a)

Democritus

b)

John Dalton

c)

Ernest Rutherford

d)

J.J. Thomson

e)

Niels Bohr

156.

Which scientist's model is referred to as the Plum Pudding Model?

a)

Democritus

b)

John Dalton

c)

Ernest Rutherford

d)

J.J. Thomson

e)

Niels Bohr

157.
In the Thomson Model, he discovered the existence of what particle?
a)
Electrons
b)
Protons
c)
Neutrons
d)
Quarks
158.
Rutherford’s experiment determined that the nucleus of an atom is tiny, dense and  ______ charged. 
a)
neutrally
b)
negatively
c)
positively
159.

Who named the positive center of the atom the "nucleus?"

a)

Democritus

b)

Dalton

c)

Thomson

d)

Rutherford

160.

Who discovered that the atom had an small, dense, positively charged center?

a)

Ernest Rutherford

b)

J.J Thomson

c)

Robert Millikan

d)

John Dalton

161.

Which scientist performed the Gold Foil Experiment??

a)

Democritus

b)

John Dalton

c)

Ernest Rutherford

d)

J.J. Thomson

e)

Niels Bohr

162.

Which scientist performed the Cathode Ray Experiment?

a)

Democritus

b)

John Dalton

c)

Ernest Rutherford

d)

J.J. Thomson

e)

Niels Bohr

163.

What was the atomic theory about ?

a)

Matter is made tiny particles called atoms.

b)

Atoms combine in whole numbers.

c)

Atoms of an element are identical in mass and properties.

d)

Different elements have different properties.

e)

They are divisible into protons. It contains electronic shells.

164.
Who stated that atoms cannot be divided?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Bohr
165.

Which experiment led to the discovery of the charge to mass ratio of the electron?

a)

CRT

b)

Gold foil

c)

Oil Drop

d)

Quantum

166.

Who did the oil drop experiment?

a)

Thomas Edison

b)

JJ Thomson

c)

Albert Einstein

d)

Robert Millikan

167.

Which type of ion results from the gain of electrons and has a negative charge?

a)

Cation

b)

Anion

168.

Metals form __________, while nonmetals form __________.

a)

Anions, cations

b)

Cations, anions

169.

Which type of ion results from the loss of electrons and has a positive charge?

a)

Cation

b)

Anion

170.

When an atom receives an electron it becomes a

a)

positive cation

b)

negative anion

c)

positive anion

d)

negative cation

171.

What charge does a cation have?

a)

negative

b)

positive

172.

What charge does an anion have?

a)

negative

b)

positive

173.

If a neutral atom of Boron has 5 protons and 5 electrons, how many electrons would a -3 anion have?

a)

2

b)

3

c)

5

d)

8

174.

What is the charge of this atom?

a)

neutral

b)

positive

c)

negative

175.

What is the charge of this atom?

a)

neutral

b)

positive

c)

negative

176.

What is the charge of this atom?

a)

neutral

b)

positive

c)

negative

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