Free Printable Proton, Neutrons, Atomic Mass, Number

1.

What are the reactants of photosynthesis?

a)

$CO_{2_{ }}$ + $H_2O$

b)

not me

2.

What are the reactants of cellular respiration?

a)

$CO_{2_{ }}$ + not me

b)

$C_6H_{12}O_6$ + $O_2$

3.

The fluorine atom has an atomic number of

a)

19

b)

9

4.

What is the mass number and atomic number ?

a)

Mass number = 7, atomic number = 14

b)

Mass number = 14, atomic number = 7

5.

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

6.

How many neutrons does the an element with an atomic number of 3 and a mass of 6.9 contain?

a)

6.9

b)

4

c)

3

d)

7

7.

How many neutrons does oxygen have?

a)

16

b)

15.99

c)

8

d)

Doesn't contain any neutrons

8.

Can you round the atomic mass?

a)

Yes, always round the mass

b)

No, never round the mass

c)

Depends on which element

d)

Only round if the number increases

9.

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

10.

What is the atomic number of this atom?

a)

2

b)

4

c)

6

d)

none of the above

11.

The total number of protons and neutrons in an atom is called the...

a)

Atomic number

b)

Proton number

c)

Mass number

d)

Weight number

12.

Subatomic particles with a positive charge

a)

neutrons

b)

atomic mass

c)

protons

d)

isotopes

13.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

14.

Subatomic particle with a charge of 0

a)

neutron

b)

proton

c)

electron

d)

quark

15.

These will determine what element an atom is.

a)

number of neutrons

b)

number of electrons

c)

number of atoms

d)

number of protons

16.

In an atom, the number of protons is equal to the number of ____________.

a)

energy levels

b)

neutrons

c)

neurons

d)

electrons

17.

What is the atomic mass of "F"

a)

9

b)

18

c)

17

d)

19

18.

An atom of the element with atomic number 6 always has _____.

a)

six protons in its nucleus

b)

an atomic mass of six

c)

more than six neutrons

d)

six electron clouds

19.

How many electrons does potassium K contain? (click to see image)

a)

19

b)

39

c)

20

d)

40

20.

How many protons are in this element?

a)

79

b)

196

c)

117

d)

Cannot be determined

21.

How many protons are in this element?

a)

79

b)

196

c)

117

d)

Cannot be determined

22.

How many electrons does an Iodine atom have?

a)

53

b)

126

c)

73

d)

179

23.

How many neutrons does an Oxygen atom have?

a)

8

b)

16

c)

24

d)

7.999

24.

How many protons are in Beryllium?

a)

4

b)

9

c)

5

d)

2

25.

What is atomic number?

a)

Number of protons in an atoms

b)

Number of neutrons in an atom

c)

Mass of an atom

d)

Charge on an atom

26.

Which subatomic particles are found in the nucleus of an atom?

a)

Protons and Electrons

b)

Protons and Neutrons

c)

Neutrons and Electrons

d)

Protons, Neutrons and Electrons

27.

The total number of protons and neutrons in an atom is called the...

a)

Atomic number

b)

Proton number

c)

Mass number

d)

Weight number

28.

C.

a)

proton

b)

electron

c)

neutron

d)

valence electron

29.

B

a)

proton

b)

electron

c)

neutron

d)

valence electron

30.

The atomic number of an element is the number of ____________, and therefore the number of ___________in an atom.

a)

electrons

b)

neutrons

c)

protons

31.

The atomic mass of an element is the number of ____________+ _______________in an atom.

a)

electrons

b)

neutrons

c)

protons

32.

To get the number of neutrons in an atoms, _______________ the atomic mass and atomic number.

a)

add

b)

subtract

c)

multiply

d)

divide

33.

Elements are known (named) based on the number of ____________ in their atom.

a)

electrons

b)

neutrons

c)

ions

d)

protons

34.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

35.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

36.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

37.

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

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

38.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

39.

Nickel-59 has how many neutrons?

a)

30

b)

31

c)

32

d)

33

40.

Bromine-80 has how many neutrons?

a)

41

b)

42

c)

44

d)

45

41.

76 protons and 114 neutrons

a)

Osmium-114

b)

Osmium-76

c)

Osmium-190

d)

Osmium-190.23

42.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

43.

9 protons and 9 neutrons

a)

Fluorine-18

b)

Fluorine-9

c)

Fluorine-16

d)

Fluorine-18.998

44.

How do you calculate mass number?

a)

Mass x percent

b)

Protons + Electrons

c)

Protons + Neutrons

d)

Neutrons + Protons + Electrons

45.

Which of the following isotopes has the most neutrons?

a)

Oxygen-16

b)

Oxygen-17

c)

Oxygen-18

d)

They all have the same number of neutrons.

46.

If an isotope has an atomic number of 15 and a mass number of 31, how many neutrons does it have?

a)

15

b)

16

c)

31

d)

46

47.

What is the mass number of an isotope with 20 protons and 22 neutrons?

a)

20

b)

22

c)

40

d)

42

48.

If Carbon-14 has 6 protons, how many neutrons does it have?

a)

6

b)

7

c)

8

d)

14

49.

How do isotopes of the same element differ?

a)

Different number of protons

b)

Different number of electrons

c)

Different number of neutrons

d)

Different atomic numbers

50.

What is the atomic number of an isotope?

a)

The number of protons plus neutrons

b)

The number of protons

c)

The number of neutrons

d)

The number of electrons

51.

How many neutrons does the isotope of lithium have?

a)

8

b)

3

c)

4

d)

5

52.

How many protons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

53.

How many neutrons in C-14?

a)

6

b)

7

c)

14

d)

8

54.

How many neutrons does the isotope below have? ⁸⁹ ₃₆Kr

a)

53

b)

36

c)

89

d)

125

55.

How many neutrons does an atom of the isotope Neon-22 have?

a)

12

b)

10

c)

22

d)

20

56.

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

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

57.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

58.

Nickel-59 has how many neutrons?

a)

30

b)

31

c)

32

d)

33

59.

Bromine-80 has how many neutrons?

a)

41

b)

42

c)

44

d)

45

60.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

Proton, Neutrons, Atomic Mass, Number

Total questions: 60

Worksheet time: 46mins

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