Free Printable Structure of Atoms and the Periodic Table

1.

The positive particles of an atom are

a)

electrons

b)

positrons

c)

neutrons

d)

protons

2.

the central region of an atom where its neutrons and protons are is its

a)

nucleus

b)

electron cloud

c)

core

d)

center

3.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

4.

Most of the mass of an atom is found in the ______.

a)

nucleus

b)

proton

c)

electron cloud

d)

isotope

5.

The smallest particle with characteristics of an element is known as the

a)

Periodic Table

b)

Atom

c)

Proton

d)

Electron

6.

How does the size of a proton compare to the size of a neutron?

a)

larger

b)

smaller

c)

equal

7.

These particles orbit around the nucleus of an atom. What are they called?

a)

electrons

b)

protons

c)

neutrons

d)

photons

8.

Where are electrons of an atom found?

a)

Nucleus

b)

Electron Cloud

c)

Some are in the nucleus and some in the electron cloud.

d)

They are moving everywhere.

9.

These are the SMALLEST subatomic particles

a)

Proton

b)

Neutron

c)

Electron

10.

From the diagram, which particles are indicated with the arrow?

a)

electrons and protons

b)

protons and neutrons

c)

electrons and neutrons

d)

photons and nucleons

11.

In terms of matter, the atom is almost entirely filled with _____

a)

orbiting electrons

b)

charged protons

c)

heavy neutrons

d)

empty space

12.

Why is the overall charge of an atom neutral (0)?

a)

They have the same number of protons and neutrons.

b)

They have the same number of protons and electrons.

c)

They have the same number of electrons and neutrons.

13.

The number of protons in the nucleus of an atom is called the --

a)

atom

b)

proton

c)

atomic mass number

d)

atomic number

14.

An arrangement of elements in order of their atomic numbers is called the _________________.

a)

Atomic Number

b)

Electron Cloud

c)

Periodic Table

d)

Nucleus

15.

Which subatomic particles are the same number? Check all that apply.

a)

a proton

b)

a neutron

c)

an element

d)

an electron

16.

A region around the nucleus of an atom where electrons are found.

a)

Electron Nucleus

b)

Electron Cloud

c)

Cloud of Electrons

d)

Electron

17.

Which subatomic particle(s) are found in the nucleus of the atom? Choose all that apply.

a)

proton

b)

neutron

c)

electron

18.

What is the label A?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

19.

What is the label B?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

20.

What is the label C?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

21.

What is the label D?

a)

electron cloud

b)

electron

c)

electron ring

d)

electron track

22.

What is label E?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

23.

Scientist whose atom model looked like a chocolate chip cookie.

a)

Bohr

b)

Chadwick

c)

Dalton

d)

Thomson

24.

He proposed the atomic theory.

a)

Bohr

b)

Chadwick

c)

Dalton

d)

Rutherford

25.

How many protons does Nitrogen have?

a)

7

b)

8

c)

14

d)

14.01

26.

Which of the labeled structures is a neutron?

a)

a

b)

b

c)

c

27.

What is the mass number of this element?

a)

7

b)

8

c)

14

d)

14.01

28.

Which of the labeled structures is an electron?

a)

a

b)

b

c)

c

29.

If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?

a)

11

b)

12

c)

23

d)

34

30.

Which of the following particles is NOT found in an atom's nucleus?

a)

proton

b)

neutron

c)

electron

31.

An element has 17 protons and 18 neutrons in the nucleus. What is the element's mass number?

a)

17

b)

18

c)

1

d)

35

32.

Which of the labeled structures is a proton?

a)

a

b)

b

c)

c

33.

What is the chemical symbol of this element?

a)

79

b)

Au

c)

AU

d)

gold

34.

How do you find the atomic number?

a)

by the number of electrons

b)

by the number of protons

c)

by the number of neutrons

35.

The number of neutrons in an atom =

a)

protons - neutrons

b)

mass number - protons

c)

protons - neutrons

d)

mass number - electrons

36.

The number of electrons in an atom is found by the

a)

protons

b)

atomic number

c)

protons and atomic number

d)

none

37.

What is the atomic number of this Carbon atom

a)

6

b)

8

c)

14

d)

12

38.

What is the mass number of this Carbon atom?

a)

8

b)

12

c)

6

d)

15

39.

What is the element symbol?

a)

Argon

b)

Ar

c)

18

d)

39.948

40.

What is the element name?

a)

Argon

b)

Neon

c)

18

d)

Ar

41.

The number 18 represents the

a)

Atomic number

b)

Neutrons

c)

Element Name

d)

Element symbol

42.

The number of protons is...

a)

18

b)

39.948

c)

40

d)

22

43.

The number of electrons is...

a)

18

b)

39.948

c)

40

d)

22

44.

The number of neutrons is...

a)

18

b)

39.948

c)

40

d)

22

45.

The mass number is...

a)

18

b)

39.948

c)

40

d)

22

46.

The mass number of an atom =

a)

protons + neutrons

b)

protons - neutrons

c)

electrons - neutrons

d)

neutrons + electrons

47.

All matter is made of _________.

a)

energy

b)

atoms

c)

electrons

d)

compounds

48.

If an atom has 3 electrons, how many protons does it have?

a)

1

b)

2

c)

4

d)

3

49.

Atoms are made up of ________________

a)

energy

b)

electrons

c)

subatomic particles

d)

gasses

50.

The subatomic particles that make up an atom.

a)

solid, liquid, gas

b)

electrons, protons, nucleus

c)

energy, protons, nucleus

d)

electrons, protons, neutrons

51.

The properties of an ____________ depend on the number of __________ particles in the atom.

a)

electron .... protons

b)

atom ..... energy

c)

atom ..... subatomic

d)

nucleus .... neutron

52.

What is the correct formula for calculating how many neutrons are in an atom?

a)

Protons + Electrons= Neutrons

b)

Atomic mass - Atomic number= Neutrons

c)

Atomic mass + Atomic number = Neutrons

d)

Atomic mass - Protons = Neutrons

53.

The horizontal row on the periodic table is called a

a)

group

b)

family

c)

period

d)

atomic number

54.

Group 13, Period 4...

a)

galium

b)

gallium

c)

Gallium

d)

Ge

55.

Group 19, Period 1...

a)

He

b)

Helium

c)

Lu

d)

Luthenium

e)

That's dumb, doesn't exist.

56.

Group 17, Period 2...

a)

Flourine

b)

Fluorine

c)

Chlorine

d)

Clorine

57.

Group 2, Period 5...

a)

Sr

b)

sr

c)

Ba

d)

ba

58.

A vertical column is called...

a)

group

b)

tower

c)

period

d)

crew

59.

If the atomic number of Krypton is 36 and the atomic mass is 84. Then which choice show the correct number of particles inside and outside the nucleus of the atom?

a)

inside 36 outside 36

b)

inside 36 outside 84

c)

inside 84 outside 36

d)

inside 84 outside 84

60.

An atom has 25 protons, 30 neutrons, and 25 electrons. WHat is the charge of the nucleus?

a)

-25

b)

+25

c)

+30

d)

-30

61.

A certain atom has 11 electrons and 8 neutrons. What is its atomic mass?

a)

19

b)

15

c)

11

d)

18

62.

An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?

a)

36

b)

16

c)

74

d)

48

63.

An atom of a certain element has 11 electrons, and a mass number of 23. This element is very reactive in room temperature. How many neutrons are in this atom?

a)

11

b)

12

c)

33

d)

23

64.

A neutral atom has an equal number of positive and negative charges. If a neutral fluorine atom has 9 protons and 10 neutrons, how many electrons will it have?

a)

10

b)

9

c)

8

d)

7

65.

An atom of a certain number has 36 protons, 36 electrons, and a mass number of 84. How many neutrons does it have?

a)

36

b)

48

c)

72

d)

84

66.

How many electrons are in this element?

a)

39

b)

19

c)

20

d)

21

67.

How many neutrons are in this element?

a)

39

b)

19

c)

20

d)

40

68.

How many protons are in this element?

a)

39

b)

19

c)

20

d)

40

69.

How many protons does lithium have ?

a)

7

b)

6

c)

3

d)

9

70.

How many electrons does lithium have ?

a)

7

b)

6

c)

3

d)

9

71.

How many neutrons does lithium have ?

a)

7

b)

4

c)

3

d)

6.9

72.

How many neutrons does Oxygen - 16 have

a)

8

b)

16

c)

15

d)

7

73.

How many protons does Oxygen have

a)

8

b)

16

c)

15.9

d)

24

74.

What is oxygen's atomic number?

a)

8

b)

16

c)

15.9

d)

24

75.

What is oxygen's mass number?

a)

8

b)

16

c)

15.9

d)

24

76.

What is oxygen's atomic weight?

a)

8

b)

16

c)

15.999

d)

24

77.

Atoms with the same number of protons but different number of neutrons is a(n) _____

a)

ion

b)

nucleus

c)

isotope

d)

Mass number

78.

What does the 1.00794 stand for?

a)

Hydrogen

b)

atomic number

c)

atomic mass

d)

atomic explosion

79.

How many protons are in Beryllium?

a)

4

b)

9

c)

5

d)

2

80.

How many neutrons are in Beryllium?

a)

4

b)

9

c)

5

d)

2

81.

How many electrons are in Beryllium?

a)

4

b)

9

c)

5

d)

2

82.

What is Beryllium's atomic number?

a)

4

b)

9

c)

5

d)

2

83.

What is Beryllium's mass number?

a)

4

b)

9

c)

9.012

d)

2

84.

What is Beryllium's atomic weight?

a)

4

b)

9

c)

9.012

d)

2

85.

What is the chemical symbol for Lithium?

a)

H

b)

He

c)

Li

d)

N

86.

How many neutrons does Chlorine (Cl) with an atomic number of 17 and an atomic mass of 35.

a)

17

b)

18

c)

19

87.

How many protons does this element have?

a)

40

b)

21

c)

20

d)

41

88.

What is the atomic mass of "F"

a)

9

b)

18

c)

17

d)

19

89.

Sodium has an atomic number of 11, how many protons does this atom have?

a)

22

b)

11

c)

12

d)

2

90.

Which description about the proton is accurate?

a)

Positively charged particle with a mass less than 0 amu

b)

A neutrally charged particle with a mass less than 0 amu

c)

Positively charged particle with a mass of 1 amu

d)

A neutrally charge particle with a mass of 1 amu

91.

Elements can have the same number of protons?

a)

True

b)

False

92.

The electron cloud is the home of the proton?

a)

True

b)

False

93.

Which of the following is NOT an accurate description of the nucleus?

a)

positively charged from the protons

b)

extremely dense from neutrons and protons

c)

negatively charged

d)

in the center of the atom

94.

A stable element with 27 electrons will contain how many protons?

a)

27 protons in the electron cloude

b)

59 protons in the extremely dense nucleus

c)

27 protons in the extremely dense nucleus

d)

59 protons in the electron cloud

95.

Oxygen-16, Oxygen-17, Oxygen-18...

a)

These are isotopes

b)

These don't exist.

c)

These are all the same.

d)

Where's Oxygen-19?

96.

Oxygen-16, Oxygen-17, Oxygen-18...

a)

These have the same number of protons

b)

These have different number of protons

c)

These don't have any protons

d)

Where's Oxygen-15?

97.

Oxygen-16, Oxygen-17, Oxygen-18...

a)

These all differ by 1 neutron

b)

These have the same number of neutrons

c)

These don't have any neutrons

d)

I think Oxygen-15 & Oxygen-19 are home sick.

Structure of Atoms and the Periodic Table

Total questions: 97

Worksheet time: 1hrs 5mins

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