Free Printable Protons, Neutrons, and Electrons

1.

Carbon has how many protons?

a)

12

b)

6

c)

7

d)

4

2.

Argon has how many Electrons?

a)

18

b)

40

c)

8

d)

3

3.

Potassium has how Electrons?

a)

4

b)

19

c)

39

d)

1

4.

Bromine has how many Neutrons?

a)

35

b)

80

c)

45

d)

8

5.

Oxygen has a mass of...

a)

8

b)

16

c)

15

d)

6

6.

Arsenic has a mass of _______

a)

33

b)

79

c)

75

d)

47

7.

How many protons are in Gold

a)

79

b)

197

c)

118

d)

276

8.

How many neutrons are in Tungsten

a)

110

b)

74

c)

183

d)

258

9.

How many electrons are in Manganese (Mn) ?

a)

12

b)

25

c)

55

d)

30

10.

The number of neutrons equals...

a)

atomic number - mass number

b)

Protons - neutrons

c)

Electrons - protons

d)

mass number - atomic number

11.

Where are protons located in the atom?

a)

orbitals

b)

nucleus

c)

rings

d)

positive

12.

What does the 6 represent?

a)

Atomic mass

b)

Atomic number

c)

Chemical symbol

d)

Element name

13.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

14.

How many protons are in Sodium?

a)

11

b)

22

c)

12

d)

33

15.

How many electrons are in Aluminium?

a)

40

b)

27

c)

13

d)

14

16.

How many neutrons are in Magnesium?

a)

36

b)

12

c)

24

d)

6

17.

How many neutrons are in Phosphorus-31?

a)

16

b)

15

c)

31

d)

46

18.

How many electrons are in Sulfur?

a)

32

b)

16

c)

48

d)

8

19.

How many protons are in Chlorine?

a)

35

b)

18

c)

17

d)

52

20.

How many neutrons are in Argon?

a)

18

b)

40

c)

58

d)

22

21.

How many electrons are in Potassium?

a)

19

b)

20

c)

58

d)

39

22.

How many protons, neutrons, and electrons are in Oxygen?

a)

Protons = 8; Neutrons = 16; Electrons = 8

b)

Protons = 8; Neutrons = 8; Electrons = 8

c)

Protons = 16; Neutrons = 8; Electrons = 16

d)

Protons = 16; Neutrons = 24; Electrons = 16

23.

Arsenic has a mass of _______

a)

33

b)

79

c)

75

d)

47

24.

Oxygen has a mass of...

a)

8

b)

16

c)

15

d)

6

25.

The negatively charged particle that is found in the rings of an atom is called a(n)

a)

electron

b)

proton

c)

neutron

d)

nucleus

26.

The nucleus is made up of

a)

Protons and neutrons

b)

protons and electrons

c)

electrons and neutrons

d)

neutrons

27.

The neutrally charged particle (no charge) inside the nucleus is called a(n)

a)

proton

b)

neutron

c)

electron

d)

nucleus

28.

A proton is described as

a)

a positively charged particle in the nucleus

b)

a positively charged particle in the rings of an atom

c)

a neutrally charge particle in the nucleus

d)

a negatively charge particle in the nucleus

29.

What is the formula to solve for the neutron?

a)

Mass + Atomic Number= Neutrons

b)

Mass x Atomic Number = Neutrons

c)

Mass - Atomic Number = Neutrons

d)

Mass + Number of Protons = Neutron

30.

An atom of an element with a different number of neutrons and therefore a different atomic mass

a)

Isotope

b)

Ion

c)

Atom

d)

Particle

31.

What is the ATOMIC MASS of the isotope Carbon-14?

a)

14

b)

6

c)

12

d)

20

32.

How many neutrons does the isotope Iron-55 have?

a)

29

b)

30

c)

55

d)

26

33.

Carbon-14 has ____ protons, ____ electrons, and _____ neutrons.

a)

6, 6, 8

b)

6, 6, 6

c)

6, 6, 14

d)

6, 10, 14

34.

An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?

a)

15

b)

16

c)

31

d)

46

35.

By studying the picture, you can determine that Carbon-13 has ____ protons.

a)

6

b)

13

c)

12

d)

14

36.

Using the picture, you can determine that Carbon-13 has ____ neutrons.

a)

13

b)

6

c)

12

d)

7

37.

An atom with 19 protons, and 19 electrons and a mass of 39 has how many neutrons?

a)

19

b)

39

c)

20

d)

58

38.

How many protons does an aluminum atom have?

a)

27

b)

14

c)

40

d)

13

39.

How many electrons does a sodium atom have?

a)

23

b)

11

c)

12

d)

34

40.

How many neutrons does a silver atom with a mass of 108 amu have?

a)

47

b)

108

c)

61

d)

108

41.

What is the atomic number of a chlorine atom with a mass of 35?

a)

17

b)

35

c)

18

d)

52

42.

Who made this model? (the picture is representing positives and negatives spread throughout the atom)

a)

Dalton

b)

Democritus

c)

Thomson

d)

Rutherford

43.

Whose created this atom model?

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Heisenberg and Schrodinger

44.

Atoms of the same element must always have the same number of _________

a)

electrons

b)

neutrons

c)

isotopes

d)

protons

45.

What is the center part of an atom containing protons and neutrons called?

a)

nucleus

b)

neutron

c)

proton

d)

electron cloud

Protons, Neutrons, and Electrons

Total questions: 45

Worksheet time: 40mins

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