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Paper 1
Atomic structure & radioactivity
Nuclear Equations
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Cards (14)
What is an alpha particle composed of?
Two
protons
and two
neutrons
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How is an alpha particle represented in nuclear equations?
Using the symbol for
helium
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What is the atomic number of an alpha particle?
2
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What does the mass number of an alpha particle indicate?
It has 4
protons
and
neutrons
combined
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What happens to the atomic number during alpha decay?
It decreases by
2
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What happens to the mass number during alpha decay?
It decreases by
4
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What happens to a neutron during beta decay?
It changes to a
proton
and an
electron
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What is a beta particle?
An electron ejected from the
nucleus
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What happens to the atomic number during beta decay?
It increases by
1
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What happens to the mass number during beta decay?
It
does
not
change
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What happens to both atomic number and mass number during gamma decay?
They do not change
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What are the rules for alpha decay?
Atomic number
decreases by 2
Mass number
decreases by 4
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What are the rules for beta decay?
Atomic number
increases by 1
Mass number
does not change
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What are the characteristics of gamma decay?
Atomic number
does not change
Mass number
does not change
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