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Q 1/12
Score 0
The particle that has a +2 charge
30
Alpha
Gamma
Beta
Q 2/12
Score 0
The particle that is really an electron.
30
Gamma
Alpha
Beta
12 questions
Q.
The particle that has a +2 charge
1
30 sec
Q.
The particle that is really an electron.
2
30 sec
Q.
Nuclei that fall inside the __ are considered to be stable (resistant to change)
3
30 sec
Q.
The type of radiation that is extremely heavy and cannot pass through paper.
4
30 sec
Q.
The atomic number represents how many ___ there are.
5
30 sec
Q.
Beta, gamma, and alpha particles are all examples of __.
6
30 sec
Q.
The particle that can penetrate through paper, wood, and lead.
7
30 sec
Q.
Two atoms with the same atomic number but different mass numbers.
8
30 sec
Q.
The time it takes for half of the molecules within a sample to decay.
9
30 sec
Q.
The particle that has the symbol β.
10
30 sec
Q.
The mass of radium-226 in a sample is found to have decreased from 45.00g to 5.625g in a period of 4800 years. From this information, calculate the half-life of radium-226.
11
30 sec
Q.
The mass of radium-226 in a sample is found to have decreased from 45.00g to 5.625g in a period of 4800 years. How many years will it take for radium-226 to reach a value of 2.8 grams?
