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WorksheetsNuclear Chemistry Review
Total questions: 13
Worksheet time: 8mins
Beta particles have...
A negative charge and zero mass
A negative charge and almost no mass
A positive charge and a 4 AMU mass
No charge and no mass
Alpha particles have...
A negative charge and zero mass
A negative charge and almost no mass
A positive charge and a 4 AMU mass
No charge and no mass
Gamma particles have...
A negative charge and zero mass
A negative charge and almost no mass
A positive charge and a 4 AMU mass
No charge and no mass
Which type of particle has a positive charge?
X-rays
Gamma
Alpha
Beta
Which type of radioactive decay will not change the identity of the atom?
Beta decay
Alpha decay
Gamma decay
All of these change the identity of the atom
An atom of carbon-14 undergoes beta decay. Give the name (element-#) of the isotope produced.
(a)
An atom of 69Zn undergoes beta decay. What will the resulting isotope be?
copper-69
nickel-65
gallium-68
gallium-69
An atom of Uranium-237 undergoes alpha decay. Give the name (element-#) of the daughter isotope produced.
(a)
When an atom undergoes alpha decay, the mass number ____________________ and the atomic number _____________.
stays the same; increases by 1
stays the same; stays the same
decreases by 2; decreases by 2
decreases by 4; decreases by 2
Based on the graph, how many hours does it take for 20 grams of the substance to decay?
6 hours
10 hours
18 hours
16 hours
About how many grams of the element will remain after one day?
12 grams
8 grams
57 grams
27 grams
What is the half-life of the pictured element?
16 hours
18 hours
4 hours
10 hours
What percent of a sample will remain after 2 half-lives have passed?
50
0
12
25
