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HS Mid-Term Review Part 2

Total questions: 76

Worksheet time: 2hrs 6mins

Name
Class
Date
1.

Choose all the items that are elements.

a)

NaCl (table salt)

b)

Sulfur

c)

O2

d)

Water

e)

Air

2.

Choose all of the items that are compounds.

a)

NaCl (table salt)

b)

Sulfur

c)

O2

d)

Water

e)

Air

3.

Which element is similar to Li?

a)

Be

b)

K

4.

Which element is similar to Mg?

a)

Ca

b)

B

5.

Which element is the least reactive?

a)

Li

b)

Ne

c)

B

d)

C

6.

Which choice shows the elements in order from most reactive to least reactive. Sr, K, Cl, P

a)

Sr, K, Cl, P

b)

K, Cl, Sr, P

c)

K,P, Sr, Cl

d)

K, Sr, P, Cl

7.

Students in Mrs. Clark's science class are investigating a substance that has the following properties

-shiny

-bends easily

-hard, not easily broken


Based on these properties how would you classify the substance?

a)

metal

b)

nonmetal

c)

metalloid

8.

What is the name of group number 1?

a)

halogens

b)

noble gases

c)

alkali metals

d)

alkaline earth metals

9.

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

a)

numbers, rows

b)

masses, rows

c)

masses, column

d)

numbers, column

10.

A grouping of elements based on similar chemical properties, arranged by columns in the periodic table; also known as a group

a)

family

b)

period

c)

row

d)

isotope

11.

A row on the Periodic Table of Elements

a)

family

b)

period

c)

row

d)

isotope

12.
__________ would have some characteristics of metals and some characteristics of nonmetals.
a)
Gold
b)
Sodium
c)
Arsenic
d)
Bismuth
13.

Which element is found in group 2, period 6?

a)

Oxygen (O)

b)

Barium (Ba)

c)

Selenium (Se)

d)

Carbon (C)

14.

Which halogen is found in period 4?

a)

Krypton (Kr)

b)

Xenon (Xe)

c)

Bromine (Br)

d)

Iodine (I)

15.

Which element has similar chemical properties as sodium but has 7 energy levels?

a)

Francium (Fr)

b)

Cesium (Cs)

c)

Rubidium (Rb)

d)

Potassium (K)

16.

How many protons are in one carbon atom?

a)

1

b)

6

c)

12.01

d)

12

17.

How many electrons are in one carbon atom?

a)

1

b)

6

c)

12.01

d)

12

18.

How many electrons are in one carbon atom?

a)

1

b)

6

c)

12.01

d)

12

19.

What is the atomic mass of Neon?

a)

10

b)

20.18

c)

10.18

d)

20

20.
How many protons are in Beryllium?
a)

4

b)

9

c)

5

d)

2

21.

What is the atomic mass of Gold?

a)

79

b)

196.97

c)

79.97

d)

275

22.

Match the following

a)

Group 18

1.

Noble Gases

b)

Group 1

2.

Alkali Metals

c)

Group 2

3.

Alkaline Earth Metals

d)

Groups 3-12

4.

Transition metals

e)

Group 17

5.

Halogens

23.

Match the following

a)

Elements

1.

Contain only one type of atom

b)

Molecules

2.

at least 2 atoms combined together

c)

Compounds

3.

At least 2 DIFFERENT atoms combined together

d)

Mixture

4.

2 or more substances that are NOT chemically combined

24.

Match the following

a)

Located in the nucleus; have a positive charge; and a mass of 1 amu

1.

Protons

b)

Located outside of the nucleus; have a negative charge; and a mass of 1/2000th of an amu

2.

electrons

c)

located in the nucleus; have no charge; and no charge

3.

neutrons

25.

Elements with similar qualities are located in the same

(a)  

26.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
27.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
28.
Cations are...
a)
Positive
b)
Negative
c)
Neutral
d)
Purring
29.
Anions are...
a)
Positive
b)
Negative
c)
Neutral
d)
Crying
30.

What is the name of this ion?

a)

oxide

b)

oxygen

31.

Why are ions formed?

a)

To make our lives difficult

b)

Because atoms want to be stable with 8 valence electrons

c)

Because atoms have the same number of protons and electrons

d)

Because atoms gained neutrons

32.

How many protons, neutrons, and electrons?

a)

proton = 6, neutron = 4, electron = 1

b)

proton = 4, neutron = 4, electron = 5

c)

proton = 1, neutron = 6, electron = 10

d)

proton = 4, neutron = 2, electron = 3

33.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

34.

What is an ion?

a)

an atom in which the number of protons equals the number of electrons.

b)

an atom in which the number of protons is not equal to the number of electrons.

c)

an atom with a charge

d)

an atom created when an atom gains or lose electrons

35.

What is the ion formed from Sulfur? If it has 6 valence electrons.

a)

S+2

b)

S-2

c)

S+6

d)

S-6

36.

How many electrons would a Calcium ion gain/lose? If it has 2 valence electrons.

a)

lose 1

b)

gain 1

c)

lose 2

d)

gain 2

37.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

38.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
39.

If an element has 3 valence electrons, what charge will likely form on its ion ?

a)

+3

b)

+5

c)

-3

d)

-5

40.

Be has 2 valence electron. It will have a charge of _______

a)

+1

b)

+2

c)

-1

d)

-2

41.

Al has 3 valence electron. It will have a charge of _______

a)

+3

b)

-3

c)

+2

d)

-2

42.

P has 5 valence electron. It will have a charge of _______

a)

+3

b)

-3

c)

+2

d)

-2

43.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
decay
d)
gamma radiation
44.
This happens naturally due to an unstable nucleus.
a)
fission
b)
fusion
c)
radioactive decay
d)
K-capture
45.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
46.
Which of the following is true about nuclear fusion?
a)
It is easy to implement.
b)
It produces less energy than nuclear fission.
c)
It produces more energy than nuclear fission.
d)
It has the ability to occur easily in everyday life.
47.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
48.

In which process does a heavy nucleus split into two lighter nuclei?

a)

freezing

b)

condensation

c)

fission

d)

fusion

49.

Which phrase describes a risk associated with producing energy in a nuclear power plant?

a)

depletion of atmospheric hydrogen

b)

depletion of atmospheric carbon dioxide

c)

production of wastes needing long-term storage

d)

production of wastes that cool surrounding water supplies

50.

Which reaction represents fusion?

a)
b)
c)
d)
51.

Which reaction represents fission?

a)
b)
c)
d)
52.
The product of nuclear fission includes
a)
neutrons and electrons
b)
several nuclei and neutrons
c)
several nuclei and electrons
d)
several nuclei and protons
53.
Which of the following is true about nuclear fission?
a)
The mass of the product is greater than the mass of the original nucleus
b)
The mass of the product is less than that of the original nucleus
c)
The mass of the product is the same as the mass of the original nucleus
d)
The mass of the product is 100 times greater than the original nucleus
54.

Which risk is associated with using nuclear fission to produce energy in a power plant?

a)

depletion of hydrocarbons

b)

depletion of atmospheric oxygen

c)

exposure of workers to radiation

d)

exposure of workers to sulfur dioxide

55.

A serious risk factor associated with the operation of a nuclear power plant is the production of

a)

acid rain

b)

helium gas

c)

greenhouse gases, such as CO2

d)

radioisotopes with long half-lives

56.

What is a problem commonly associated with nuclear power facilities?

a)

A small quantity of energy is produced.

b)

Reaction products contribute to acid rain

c)

It is impossible to control nuclear fission.

d)

It is difficult to dispose of wastes.

57.

The operation of a commercial nuclear reactor requires an isotope that will undergo

a)

fission and a controlled chain reaction

b)

fission and an uncontrolled chain reaction

c)

fusion and a controlled chain reaction

d)

fusion and an uncontrolled chain reaction

58.

The purpose of the high-density concrete used in some nuclear reactors is to

a)

shield the reactor walls from radiation damage

b)

shield the reactor personnel from radiation exposure

c)

control the rate of the nuclear reaction

d)

control the speed of the neutrons

59.
Nuclear Power's source comes from _________________.
a)
Uranium or Plutonium
b)
Coal
c)
Natural Gas
d)
Oil and/or Coal
60.
What product does a nuclear power plant produce for its customers?
a)
electricity
b)
a turbine
c)
hot water
d)
steam
61.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
62.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

63.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

64.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

65.

What is the Half Life of this isotope?

a)

3 days

b)

5 days

c)

8 days

d)

10 days

66.
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
67.
If one-fourth of the carbon-14 is remaining then how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
68.

Why do some elements have half-lives?

a)

they radioactively decay

b)

half of their atom gets stolen

c)

They are Twizzlers that break in half

69.

What is the only difference between two different isotopes of the same element?

a)

Number of neutrons

b)

Number of protons

c)

Number of electrons

d)

Size of atom

70.

After the third half-life, how much of the sample is left?

a)

1/2

b)

1/3

c)

1/16

d)

1/8

71.
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
a)
1.25mg
b)
1.25g
c)
10g
d)
10mg
72.
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
73.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
74.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

75.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

76.

The diagram shows 32 atoms

32 of the Red are the parent isotope

0 of the atoms are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

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