Chemistry Concepts and Applications

Section 1: Types of Radioactivity

Self Check Quizzes

1
Gamma radiation consists of __________.

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A)helium nuclei
B)electrons
C)high-energy light particles
D)protons
2
What creates the electric current that stops the alarm from sounding in a smoke detector?

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A)the battery
B)ionization caused by alpha radiation
C)house current
D)ionization caused by gamma radiation
3
"Radioactivity" was named by __________.

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A)Marie Curie
B)Henri Becquerel
C)Ernest Rutherford
D)Niels Bohr
4
About what percent of nuclei remain after 4 half lives?

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A)50%
B)6%
C)12%
D)15%
5
Radioactivity is the spontaneous emission of radiation by a/an __________.
A)covalent bond
B)hydrogen bond
C)stable electron
D)unstable atomic nucleus
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