Radioactive Decay
7 Questions
| Attempts: 3249
Isotopes and radioactive decay
Questions and Answers
- 1.
An isotope has the same number of _________, but different numbers of _____________.
- A.
Electrons, protons
- B.
Protons, electrons
- C.
Protons, neutrons
- D.
Neutrons, protons
Correct Answer
C. Protons, neutrons -
- 2.
This is the amount of time it takes for half of a radioactive material to decay.
Correct Answer
halflife
half life
half-life - 3.
What is emitted during beta decay?
- A.
An electron from the electron cloud
- B.
Two protons and two neutrons from the nucleus
- C.
An electron from the nucleus
- D.
Two protons and two neutrons from the electron cloud
Correct Answer
C. An electron from the nucleus -
- 4.
What is emitted during alpha decay?
- A.
An electron from the electron cloud
- B.
Two protons and two neutrons from the nucleus
- C.
An electron from the nucleus
- D.
Two protons and two neutrons from the electron cloud
Correct Answer
B. Two protons and two neutrons from the nucleus -
- 5.
What is all matter made up of?
- A.
Dust
- B.
Sun rays
- C.
Atoms
- D.
Metal
Correct Answer
C. Atoms -
- 6.
In beta decay a ________ splits to make a ________ and a _________ which is emitted from the nucleus.
- A.
Proton, neutron, electron
- B.
Electron, proton, neutron
- C.
Neutron, proton, electron
Correct Answer
C. Neutron, proton, electron -
- 7.
A radioactive isotope has a half-life of 2 years. How much of a 400g sample remains after 4 years?
- A.
400g
- B.
300g
- C.
200g
- D.
100g
- E.
0g
Correct Answer
D. 100g -
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Mar 18, 2022Quiz Edited by
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Oct 24, 2008Quiz Created by
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