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Periodic Table Exam Review

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.

What is an atom?

a)

A. A type of molecule

b)

B. The smallest unit of matter that retains properties of an element

c)

C. A negatively charged particle

d)

D. The space around the nucleus

2.

A proton has what charge?

a)

Negative

b)

Positive

c)

Neutral

d)

No charge

3.

A neutron has what charge?

a)

Positive

b)

Negative

c)

Neutral

d)

No charge

4.

An electron has what charge?

a)

Negative

b)

Positive

c)

Neutral

d)

Both positive and negative

5.

The atomic number tells you the number of:

a)

Protons

b)

Neutrons

c)

Electrons only

d)

Protons + Neutrons

6.

The atomic mass is best described as:

a)

Only the protons in an atom

b)

Only the neutrons in an atom

c)

The weighted average mass of all isotopes of an element

d)

Always equal to the atomic number

7.

The mass number is:

a)

Number of protons only

b)

Number of electrons + protons

c)

Number of protons + neutrons

d)

Atomic number × 2

8.

What particles are in the nucleus of an atom?

a)

Protons only

b)

Electrons only

c)

Protons and neutrons

d)

Neutrons and electrons

9.

Where are electrons found?

a)

Inside the nucleus

b)

Outside the nucleus in energy levels

c)

Mixed with neutrons

d)

Mixed with protons

10.

Which two particles determine the mass number?

a)

Protons and neutrons

b)

Protons and electrons

c)

Neutrons and electrons

d)

Electrons only

11.

An atom with atomic number 15 has how many protons?

a)

10

b)

14

c)

15

d)

16

12.

A neutral atom of oxygen has how many electrons?

a)

6

b)

8

c)

10

d)

16

13.

An atom has 6 protons, 6 neutrons, and 6 electrons. Its mass number is:

a)

6

b)

12

c)

12

d)

18

14.

Chlorine has 17 protons and 18 neutrons. Its mass number is:

a)

17

b)

35

c)

18

d)

36

15.

If an atom has 11 protons, it is:

a)

Hydrogen

b)

Carbon

c)

Magnesium

d)

Sodium

16.

A neutral atom with 20 protons has how many electrons?

a)

10

b)

18

c)

20

d)

40

17.

An atom with 82 protons is:

a)

Gold

b)

Uranium

c)

Silver

d)

Lead

18.

Which subatomic particle is negative?

a)

Electron

b)

Proton

c)

Neutron

d)

Nucleus

19.

Which subatomic particle has no charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Positron

20.

What determines the identity of an element?

a)

Number of neutrons

b)

Number of electrons

c)

Number of protons

d)

Mass number

21.

Which element has atomic number 12?

a)

Sodium

b)

Magnesium

c)

Potassium

d)

Calcium

22.

Which element has atomic number 26?

a)

Copper

b)

Nickel

c)

Iron

d)

Zinc

23.

What is the chemical symbol for potassium?

a)

P

b)

Po

c)

Pt

d)

K

24.

What is the symbol for silver?

a)

Si

b)

Ag

c)

Au

d)

Sr

25.

Which element has the symbol “Sn”?

a)

Antimony

b)

Silicon

c)

Tin

d)

Sodium

26.

Which element has the symbol “Au”?

a)

Silver

b)

Copper

c)

Gold

d)

Argon

27.

Which element has atomic number 2?

a)

Hydrogen

b)

Helium

c)

Lithium

d)

Neon

28.

Which element has atomic number 79?

a)

Mercury

b)

Gold

c)

Platinum

d)

Lead

29.

The symbol “Cl” stands for:

a)

Calcium

b)

Carbon

c)

Cobalt

d)

Chlorine

30.

The symbol “Na” stands for:

a)

Nitrogen

b)

Sodium

c)

Neon

d)

Nickel

31.

The noble gases are in group:

a)

1

b)

2

c)

17

d)

18

32.

The alkali metals are in group:

a)

1

b)

2

c)

17

d)

18

33.

The alkaline earth metals are in group:

a)

1

b)

2

c)

16

d)

18

34.

Fluorine and chlorine belong to which group?

a)

Alkali metals

b)

Noble gases

c)

Halogens

d)

Transition metals

35.

Oxygen is in period:

a)

1

b)

2

c)

3

d)

4

36.

Potassium is in period:

a)

2

b)

3

c)

4

d)

4

37.

Which group has one valence electron and is very reactive?

a)

Alkali metals

b)

Noble gases

c)

Halogens

d)

Transition metals

38.

Which group contains mostly gases at room temperature?

a)

Alkali metals

b)

Noble gases

c)

Halogens

d)

Transition metals

39.

Calcium is in which group?

a)

1

b)

2

c)

17

d)

18

40.

Iron is in which period?

a)

2

b)

3

c)

4

d)

5

41.

Sodium belongs to which family?

a)

Alkali metals

b)

Alkaline earth metals

c)

Transition metals

d)

Halogens

42.

Calcium belongs to which family?

a)

Alkali metals

b)

Alkaline earth metals

c)

Transition metals

d)

Noble gases

43.

Iron belongs to which family?

a)

Alkali metals

b)

Alkaline earth metals

c)

Transition metals

d)

Halogens

44.

Fluorine belongs to which family?

a)

Noble gases

b)

Halogens

c)

Transition metals

d)

Alkali metals

45.

Neon belongs to which family?

a)

Alkali metals

b)

Halogens

c)

Noble gases

d)

Transition metals

46.

Copper belongs to which family?

a)

Alkali metals

b)

Alkaline earth metals

c)

Transition metals

d)

Halogens

47.

The family that contains Cl is:

a)

Noble gases

b)

Alkali metals

c)

Halogens

d)

Transition metals

48.

The family with 8 valance electrons is:

a)

Alkali metals

b)

Halogens

c)

Noble gases

d)

Transition metals

49.

The most reactive metals are:

a)

Halogens

b)

Alkali metals

c)

Transition metals

d)

Noble gases

50.

Elements that sometimes act like a metal and sometimes act like a nonmetal belong to:

a)

Alkali metals

b)

Noble gases

c)

Transition metals

d)

Metalloids

51.

An atom with 7 protons and 7 neutrons has a mass number of:

a)

A. 7

b)

B. 14

c)

C. 14

d)

D. 21

52.

An atom with 15 protons and 16 neutrons has a mass number of:

a)

A. 15

b)

B. 16

c)

C. 31

d)

D. 30

53.

Carbon with 6 protons and 8 neutrons has a mass number of:

a)

12

b)

14

c)

8

d)

20

54.

Oxygen with 8 protons and 10 neutrons has a mass number of:

a)

16

b)

18

c)

20

d)

10

55.

Chlorine-37 has 17 protons. How many neutrons?

a)

A. 20

b)

B. 20

c)

C. 17

d)

D. 37

56.

Lithium-7 has 3 protons. Neutrons = ?

a)

3

b)

10

c)

4

d)

7

57.

Boron with 5 protons and 6 neutrons has a mass number of:

a)

10

b)

11

c)

12

d)

6

58.

Element with 20 protons and mass number 41 is:

a)

Sodium

b)

Magnesium

c)

Potassium

d)

Calcium

59.

Element with 12 protons and mass number 25 is:

a)

Sodium

b)

Magnesium

c)

Aluminum

d)

Silicon

60.

An isotope with 82 protons and 125 neutrons is:

a)

Lead

b)

Gold

c)

Uranium

d)

Mercury

61.

An isotope with 29 protons and 34 neutrons is:

a)

Zinc

b)

Copper

c)

Nickel

d)

Cobalt

62.

Which isotope is heavier?

a)

Carbon-12

b)

Carbon-14

c)

Both equal

d)

Neither

63.

Uranium-238 has 92 protons. Neutrons = ?

a)

92

b)

146

c)

not enough information to calculate

d)

238

64.

An isotope with mass number 31 and 15 protons is:

a)

Phosphorus

b)

Sulfur

c)

Nitrogen

d)

Silicon

65.

Which isotope is more heavier: chlorine-35 or chlorine-37?

a)

Chlorine-37

b)

Chlorine-35

c)

Both equal

d)

Neither

66.

Why are atoms of the same element neutral?

a)

Protons = neutrons

b)

Protons = electrons

c)

Neutrons = electrons

d)

Mass = charge

67.

Why is atomic mass usually not a whole number?

a)

Mistakes in measurement

b)

Because electrons add weight

c)

It is the weighted average of isotopes

d)

It equals the mass number

68.

What is the difference between mass number and atomic mass?

a)

They are the same thing

b)

Atomic mass = protons + neutrons

Mass number = weight average of isotopes

c)

Mass number = protons+neutrons

Atomic mass = weighted average of isotopes

d)

Atomic mass is calculated

Mass number is found on the periodic table

69.

Why are alkali metals (like sodium) stored in oil?

a)

To make them shiny

b)

To prevent them from reacting with air/water

c)

To make them heavier

d)

To cool them down

70.

Why do elements in a group have similar properties?

a)

They have the same atomic mass

b)

They have the same number of valence electrons

c)

They have the same number of neutrons

d)

They have the same density

71.

What is the chemical symbol for potassium?

a)

P

b)

K

c)

Pt

d)

k

72.

What is the chemical symbol for chlorine?

a)

CL

b)

Cl

c)

Ch

d)

CH

73.

What element is found at Period 5 and Group 6?

a)

H

b)

Li

c)

Mo

d)

Ta

74.

Isotopes of the same element are alike because they have the same:

a)

Neutrons

b)

Protons

c)

Mass number

d)

Electrons + neutrons only

75.

Why is the periodic table useful to scientists?

a)

Shows electron paths

b)

Alphabetizes elements

c)

Organizes elements by properties and predicts behavior

d)

Lists elements randomly

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