Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
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A level Physics- Particles and Radiation
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Course
Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
Institution
AQA
These notes are complied from two years of studying A level physics. They are highly detailed and understandable as I took notes like crazy over the A level period. They are colourful, organised and perfect for understanding concepts that you may struggle with.
Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
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,am Particles
January 2022
The number of protons in an atom is known as the atomic number a
proton number and is represented
by
the
Symbol 2 ,
which
defines
the element which the
to atom
belongs .
to
A neutral atom =
same number of elections as protons .
A nucleou is a proton(neutron ,
so the nucleon number
of an arow
is the number
of protons + neutrons in the nucleus
.
It represented A the
is
by
the
Symbol ,
known as mass number
.
nucleon
-
number (2) 0
Ca
20
Proton
number -
(2)
Number
of neutrons = nucleor - proton
number .
number
charges
Relative
charges chargeinsa
Electron -
I
e
-
1 .
60x10 - 9C Elementary
:
,
charge
-
19(
+
e =
1 .
60 x 10
Proton + 1
2
+ 1 60 x 10-1 C
+
.
,
, Specific Charge
Ispecific charge is
Marge
-
per unit mass
for a particle :
becific
charge
Not in data
charge
~
= onis
units : Coulombs por
kilogram
-
Chgt
H
can
-
De calculated
for particle :
Proton
10 58x10Chg"
=
= 9 .
z
significant
figures
To is considered te
a
of
the massed
· 3 protons a b
neutrons
-
The same
-
~
The mass
of the electrons is
negligible compared to the proton
·
and neutron ,
and can be .
ignored
If using this in exam ,
WRITE This STATEMENT
-Treific
-
· When asked to compare
-
-
charges ,
calculate
using relative
and numbers
charges
-
nucleon
-
.
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