Atomic Theory Review
Atomic Theory Review
Grade: «grade»
Subject:
Date: «date»
1
A
B
C
D
2
Which statement is consistent with the results of Rutherford's gold foil experiment?
A
B
C
D
3
Which scientist described atoms as indestructible?
A
B
C
D
E
4
Democritus
Dalton
Thomson
Rutherford
Chadwick
Which scientist's theory contained the idea that atoms of different elements can combine in whole­number ratios?
A
B
C
D
E
Democritus
Dalton
Thomson
Goldstein
Rutherford
1
5 Due to the mass in the nucleus being much greater there was a neutral particle with a mass equal to the proton. Which scientist is credited with the discovery of the neutron?
A
B
C
D
E
Negatively charged subatomic particles are known as...
6
A
B
C
D
7
protons
neutrons
electrons
nucleus
Which subatomic particles have the same mass?
A
B
C
D
8
Dalton
Thomson
Goldstein
Rutherford
Chadwick
protons and electrons
electrons and neutrons
neutrons and protons
protons, neutrons, and electrons
The number of electrons in an atom is the same for all neutral atoms of that element.
True False 9
By knowing the number of protons a neutral atom has, you should be able to determine
A
B
C
D
the number of neutrons in the neutral atom.
the mass number of the neutral atom.
the name of the atom.
none of the above
10 The number of neutrons in an atom is the same for all neutral atoms of that element.
True False 11 The element with 38 protons and 45 neutrons could correctly be identified as strontium.
True False 2
12 How many neutrons are there in a chromium atom with a mass number of 54?
A
B
C
D
E
24
30
52
54
none of the above
13 Substance E has 29 protons, 28 electrons, and 34 neutrons. Substance F has 29 protons, 27 electrons, and 34 neutrons. Substances E and F can be categorized as
A different elements
B ions
C isotopes
D nuclides
E nucleons
14 Which of the following represent a set of isotopes? Atomi nuclei containing:
A
B
C
D
15
I, II, III
III, IV
I,V
I, IV and II, V
A species with 12 protons and 10 electrons is
A
B
C
D
E
Ne2+
Ti2+
Mg2+
Mg2­
Ne2­
16
How many protons in an atom of Barium?
17
How many electrons in 136Ba2+?
18
How many neutrons in Au­199?
19 How many protons, neutrons, and electrons in a neutral atom of Phosphorus ­31?
A
B
C
D
15 p, 16 n, 16 e
15 p, 16 n, 15 e
16 p, 15 n, 16 e
16 p, 31 n, 15 e
3
20 Calculate the atomic mass of an element with the following: 68.75 amu @ 60.16% and 70.95 amu @39.84%
Answers:
1. D
2. B
3. A
4. B
5. E
6. C
7. C
8. T
9. C
10. F
11. T
12. B
13. B
14. D
15. C
16. 56
17. 54
18. 120
19. B
20. 69.63
4