Free Printable Atomic Theory

1.

Match the charge to each subatomic particle.

a)

Positive

1.

Proton

b)

Neutral

2.

Neutron

c)

Negative

3.

Electron

2.

Match the mass to each subatomic particle

a)

1.67 x 10^-27 kg

1.

Proton

b)

1.68 x 10^-27 kg

2.

Neutron

c)

9.11 x 10^-31 kg

3.

Electron

3.

Match the location of the atom to each subatomic particle

a)

Nucleus

1.

Proton

b)

Nucleus

2.

Neutron

c)

Cloud outside of nucleus

3.

Electron

4.

Match the terms to each definition.

a)

Abbreviation of element name

1.

Chemical Symbol

b)

Sum of protons and neutrons

2.

Mass Number

c)

Atom identity equal to number of protons

3.

Atomic Number

d)

Equal to the atomic number

4.

Proton

e)

Added to protons to get mass number

5.

Neutron

5.

What is the atomic number of Fe?

a)

62

b)

56

c)

65

d)

26

6.

What is the mass of an atom containing: 2 protons, 2 neutrons, and 2 electrons?

a)

0

b)

2

c)

4

d)

6

7.

What is the mass of an atom containing: 5 protons, 7 neutrons, and 7 electrons?

a)

2

b)

12

c)

0

d)

2-

8.

If an atom has 4 protons, a mass of 12, and charge of +2, how many neutrons does it have?

a)

6

b)

8

c)

4

d)

2

9.

If an atom has 8 protons, a mass of 21 AMU's, and a charge of -1, how many neutrons does it have?

a)

8

b)

9

c)

13

d)

7

10.

What particles are found in the nucleus of an atom?

a)

Protons and Electrons

b)

Neutrons and Electrons

c)

Protons and Neutrons

d)

Electrons only

11.

Which arrow points to the protons?

A

B

C

12.

Which arrow points to the neutrons?

A

B

C

13.

Label this atom's particles.

a)

Protons

b)

Electrons

c)

Nucleus

d)

Neutrons

1

2

3

4

1)

2)

3)

4)

14.

Which arrow points to the electrons?

A

B

C

15.

Drag the correct response to the appropriate box on the chart.

a)

Same mass as a neutron

b)

Same mass as a proton

c)

much less mass then protons and neutrons

d)

Nucleus

e)

Nucleus

f)

Electron Cloud

g)

Positive

h)

Negative

i)

Neutral/No charge

1

2

3

4

5

6

7

8

9

1)

2)

3)

4)

5)

6)

7)

8)

9)

16.

Zirconium has how many Protons?

17.

Which isotope has 4 neutrons?

A

B

C

18.

The mass number of Atom A is (a) because there are 6 positive (b) and 6 neutral (c) in the nucleus. Since the atomic number of Atom A is (d) then Atom A can be identified as (e) .

Choose from the below words

12

protons

neutrons

6

carbon

magnesium

electrons

18

19.

The mass number of Atom B is (a) because there are 7 positive (b) and 7 neutral (c) in the nucleus. Since the atomic number of Atom B is (d) then Atom B can be identified as (e) .

Choose from the below words

protons

neutrons

silicon

electrons

21

14

7

nitrogen

20.

Match the following

a)

number of protons & electrons

1.

18

b)

number of neutrons

2.

22

c)

mass number

3.

40

21.

Label the picture

a)

17

b)

31

c)

14

d)

mass number

e)

atomic number

f)

16

g)

15

1

2

3

4

1)

2)

3)

4)

22.

Label the atomic number:

A

B

C

23.

Label the mass number:

A

B

C

24.

Label the number that is protons and neutrons added together:

A

B

C

25.

This isotope of Titanium has:

(a) protons

22 electrons

(b) neutrons

mass number of (c)

Choose from the below words

22

26

48

70

47

21

26.

Match the following

a)

number of protons

1.

18

b)

number of neutrons

2.

22

c)

mass number

3.

40

27.

An atom of Aluminum-27 has:

(a) protons

(b) neutrons

a mass number of (c)

Choose from the below words

13

14

27

15

12

28

26

28.

(a) atoms of the same element having different massed due to varying numbers of neutrons

Choose from the below words

Isotopes

Atomic mass

Atomic number

Mass number

29.

An (a) is any of two or more forms of a (b) element, having the (c) number of protons in the nucleus, or the same atomic (d) , but having different numbers of neutrons in the nucleus, or different atomic (e) .

Choose from the below words

isotope

ion

chemical

physical

same

different

numbers

weight

weights

number

30.

Match the following terms to their correct definitions.

a)

Atoms with the same number of protons but different numbers of neutrons

1.

Isotope

b)

Total number of protons and neutrons in the nucleus

2.

Mass Number

c)

The weighted average of the masses of the isotopes of an element

3.

Atomic Mass

31.

How many neutrons are in the nucleus of a potassium atom with a mass number of 39?

32.

Match the following

a)

the mass of the atom is found here

1.

nucleus

b)

these are in the nucleus

2.

protons & neutrons

c)

if you change the number of protons you get a different...

3.

element

d)

if you change the number of neutrons you get a different...

4.

mass

e)

an isotope has the same number of protons but a different number of...

5.

neutrons

33.

An atom has 8 protons, 8 neutrons and 10 electrons. What is the atomic number?

a)

8

b)

10

c)

18

d)

26

34.

What is the charge of an atom with 13 protons, 14 neutrons, and 10 electrons?

a)

-3

b)

+3

c)

27

d)

Al

35.

What is the charge of an atom of phosphorus with 16 neutrons and 18 electrons?

a)

31

b)

2

c)

-2

d)

-3

36.

Which number means "charge" of the atom?

A

B

C

Atomic Theory

Total questions: 36

Worksheet time: 18hrs 0mins

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