Free Printable Atomic Structure Review

Free Printable Worksheets

Worksheets

Atomic Structure Review

Total questions: 25

Worksheet time: 1hrs 21mins

Name

Class

Date

1.

When positively charged alpha particles were scattered by a thin gold foil, he found that The nucleus is very small and the atom is mostly empty space.

a)

Rutherford

b)

Bohr

c)

JJ Thompson

d)

Louis de Broglie and Werner Heisenberg

e)

Dalton

2.

Electrons absorb energy and therefore their positions change in their orbit. The orbit is made with probabilities within an electron cloud.

a)

Rutherford

b)

Bohr

c)

JJ Thompson

d)

Louis de Broglie and Werner Heisenberg

e)

Dalton

3.

All elements are composed of indivisible particles called atoms

a)

Rutherford

b)

Bohr

c)

JJ Thompson

d)

Louis de Broglie and Werner Heisenberg

e)

Dalton

4.

Electrons orbit the nucleus. Like planets orbiting the sun. With each orbit are only able to contain a set number of electrons.

a)

Rutherford

b)

Bohr

c)

JJ Thompson

d)

Louis de Broglie and Werner Heisenberg

e)

Dalton

5.

Developed the idea that an atom was made up of electrons scattered unevenly within a positive sphere

a)

Rutherford

b)

Bohr

c)

JJ Thompson

d)

Louis de Broglie and Werner Heisenberg

e)

Dalton

6.

Which of the following statements about the atom did Rutherford’s experiment support?

a)

An atom contains protons, neutrons, and electrons

b)

An atom’s nucleus is small and has a positive charge

c)

Electrons follow a predictable path around the nucleus

d)

Different isotopes of an element have different masses

7.

How many protons does oxygen have?

a)

16

b)

8

c)

6

d)

15

8.

What is the mass number for oxygen?

a)

16

b)

8

c)

32

d)

6

9.

What element has 19 protons?

a)

Copper

b)

Potassium

c)

Florine

d)

Argon

10.

If the protons is 19 what else is 19?

a)

atomic number

b)

mass number

c)

neutrons

11.

How many neutrons does the element potassium (K) have?

a)

39

b)

19

c)

20

d)

31

12.

What is the symbol for silver?

a)

S

b)

Si

c)

Au

d)

Ag

13.

How many electrons does silver have?

a)

108

b)

47

c)

61

d)

79

14.

If an element has a mass of 109 and 47 protons, how many neutrons does it have?

a)

62

b)

156

c)

47

d)

109

15.

If I have an element with a mass of 152 and 89 neutrons, how many protons do I have?

a)

152

b)

63

c)

89

d)

241

16.

If I have 63 protons in a neutral atom, how many electrons do I have?

a)

63

b)

152

c)

89

d)

58

17.

What element has a mass number around 152?

a)

Eu

b)

Rg

c)

Sm

d)

Gd

18.

F^-1 has how many protons?

a)

19

b)

9

c)

10

d)

8

19.

F^-1 has how many electrons?

a)

19

b)

9

c)

10

d)

8

20.

Ba⁺² has how many electrons?

a)

56

b)

58

c)

54

d)

81

21.

Ba⁺² has how many protons?

a)

56

b)

58

c)

54

d)

81

22.

The atomic number and the ____________ is ALWAYS the same

a)

protons

b)

electrons

c)

neutrons

d)

mass

23.

What is the average atomic mass of Magnesium?

a)

24.99 amu

b)

24.20 amu

c)

23.46 amu

d)

25.13 amu

24.

Calculate the average atomic mass for this unidentified element given the following

isotope abundance table.

a)

2811 amu

b)

28.11 amu

c)

29.0 amu

d)

87.0 amu

25.

15. Uranium has three common isotopes. If the abundance of Uranium-234 is 0.01%, the abundance of Uranium-235 is 0.71%, and the abundance of Uranium-238 is 99.28%, what is the average atomic mass of uranium?

a)

235.67 amu

b)

23711.9 amu

c)

237.11 amu

d)

707 amu

100 %

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