Quiz 2: Isotopes
10 Questions
| Attempts: 1085
Questions and Answers
- 1.
Atoms that have the same number of protons and a different number of neutrons are called:
- A.
Fat atoms
- B.
Electrons
- C.
Ions
- D.
Isotopes
Correct Answer
D. Isotopes -
- 2.
Isotopes differ in __________, not atomic number
- A.
Volume
- B.
Mass
- C.
Density
Correct Answer
B. Mass -
- 3.
The mass number of an atom can be approximated by calculating the sum of:
- A.
The electrons and protons
- B.
The protons and neutrons
- C.
The neutrons and electrons
Correct Answer
B. The protons and neutrons -
- 4.
How many neutrons are in potassium-40?
- A.
19
- B.
40
- C.
21
- D.
37
Correct Answer
C. 21 -
- 5.
How many protons are in Si-52?
- A.
52
- B.
40
- C.
12
Correct Answer
C. 12 -
- 6.
If what isotope of chlorine has 24 neutrons?
- A.
Chlorine-17
- B.
Chlorine-24
- C.
Chlorine-7
- D.
Chlorine-41
Correct Answer
D. Chlorine-41 -
- 7.
How many protons are in potassium-40?
- A.
18
- B.
19
- C.
40
- D.
21
Correct Answer
B. 19 -
- 8.
Which of the following is not an isotope of Carbon?
- A.
Carbon-9
- B.
An atom with 6 protons and 7 neutrons
- C.
An atom with 7 protons and 6 neutrons
- D.
Carbon-23
Correct Answer
C. An atom with 7 protons and 6 neutrons -
- 9.
Given the natural abundance of the isotopes of carbon, which are Carbon-12, Carbon-13 and Carbon-14, what is the relative atomic mass of naturally occurring carbon?
- A.
13.0107
- B.
12
- C.
13
- D.
12.0107
Correct Answer
D. 12.0107 -
- 10.
The following rule:mass isotope1(%) + mass isotope2(%) + … mass isotopeX(%) 100 100 100is used to calculate...
- A.
Atomic mass
- B.
Isotope abundance
- C.
Relative atomic mass
- D.
Isotope number
Correct Answer
C. Relative atomic mass -
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Current Version
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Feb 10, 2016Quiz Edited by
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Feb 07, 2013Quiz Created by
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