Summary
Summary A Level AQA Physics Particles and Radioactivity revision notes
- Institution
- AQA
In depth notes on particles and radioactivity including diagrams, photos and examples.
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Inside the atom Stable / Unstable nuclei ForcesUnstable atoms ·
you
Lithium or loses electron
↑picks up a low
↳> becomes 3 El
·
be unstable in 2 electrically charged and
highly
electron
Layout of
a lithium atom can
ways-> when
· -
reactive
0 prts ·
s
pretos protons & ·
you
o neutron. neutrons are
8888 & neutrons
4
atom
3.
·
⑧ unbalanced => the
when is unstable ittries to
·
3 electrons
achieve equilibrium by emitting particles
You
ATIN until nucleus ↓
·
in the form of
Prious & neutrons] NONS
Electrons] Orbitnucleus shells
is stable
colla
charge
in
stable atoms 04 means vestable
hasa netelectrical of atoms become
·e
The Nudeus
consists
protons
of & neutrons -> nucleons ↳ balanced no.st- -> no.d RAACTIVE
neutrons
macs
number or
-> A protons
X element
Nucleonor symbol TheBasics
a
Poston Atomic Election Radioactive
-
number number
Unstable decay Stable
Isstopes
Any
of two or more forms a chemical element isotope
when there are extra
iso to
pe
·
same number of
protons in nucleus, different
number of
nations Note: thatth
& neutrons
protons electros
12-13
C
I
B decay
L
(be a) I Particle
Property
+
Proton Neutr
Electron c)
decaly Particles
Relative charge
·
7
16x18+
9
+
1.6x18
-
19
⑧
8
Calphal
↑ decay
(gammal
and
Radioactivity Proton
Neutron
-
A
charge (C)
·
Election
Max (kg) g.11x18 1.673x1827 1.675x1827 AlphaDecay Neutrino
& & neutronsare emitted as a
·
When I protons single particle
from the nucleus
·
The nucleon (A) decreases by 4, Atomic number (2) decreases by 2 Position emission
takes whe
Specific Charge 3 to other element place
Result productorders belongs
position-emitting isotop
·
Specificcharge valuethat
states how much
charge something to it'sman
has in relation a
↑X 4y c
-
=
Is
They
+
C are ma
specificcharge large
<
2 -
2
protons
Massakg
of
↳(kg
"
Beta
NUcIeUs
Decay
mastive positively charged centre of
anatom
=>
·
when when turns
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