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Chemistry
Nuclear chemistry
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Cards (14)
What is a nuclear reaction?
Involves changes to the
nucleus
Properties of alpha decay?
symbol is
α
\alpha
α
emits a
helium atom
consists of a
helium nucleus
attracted to a
negatively
charged plate
travels a
few
centimetres in the air
can be
stopped
by
a
sheet
of
paper
Properties of Beta decay?
symbol of
β
\beta
β
they are
electrons
emitted from the
nucleus
thought to be a
neutron
that
splits
in
the
nucleus,
into
a
proton
and
electron
attracted to a
positively charged plate
more
penetrating
than
α
\alpha
α
can be stopped by a
sheet of metal foil
or Perspex
they can move
1 metre
in the air
What are the properties of
Gamma decay
?
symbol of
γ
\gamma
γ
electromagnetic waves
emitted within the nuclei
not
deflected
by an electric field
most
penetrating,
they can be stopped by very thick sheet of
lead
or
concrete
most dangerous type of radiation
they can travel
multiple
metres
in the air
what is the main difference between radioactivity and chemical reactions?
chemical reactions are changes in the
electron arrangements
, while radioactivity is the change of the
nuclei
What is a radioisotope?
an
unstable
nuclei
Symbol equation for alpha atom?
4
2
\frac{4}{2}
2
4
He
Symbol for beta particle equations?
0
−
1
\frac{0}{-1}
−
1
0
e
Symbol for proton equations?
1
1
\frac{1}{1}
1
1
p
symbol for neutron equations?
1
0
\frac{1}{0}
0
1
"when
α
\alpha
α
is emitted..." What is the
α
\alpha
α
particle?
A
product
"A particle absorbing
α
\alpha
α
particle.." What is
α
\alpha
α
?
A
reactant
Define half-life
is the
time
for
half
of the nuclei, of a particular isotope, to
decay.
does the state of matter (i.e element or compound) of a radioisotope matter?
No
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