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Biological chemistry and microbiology part 1 lecture notes $9.82   Add to cart

Class notes

Biological chemistry and microbiology part 1 lecture notes

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This covers the lecture notes for the first major topic covered in the first year Biological sciences module at Imperial college london (Biological chemistry and microbiology).

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  • February 18, 2022
  • 14
  • 2021/2022
  • Class notes
  • Steve cook
  • All classes
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ATOMS paper ¥7 ¥8m
Excess energy
Ionising radiation
plum pudding model
-


24 ✗
particle elite)
:
aromas
emission
↳ uperionisinospeownetffue.tn µ
Electrons scattered 235W 0Mt
*µ pspareiaece) :
"isnthsimisinss penetrating


¥c¥¥÷ ,





- ~ sphere of positive charge ~ Loin Fondation

.mg#era--ung*DoIoBH
-




keywotds-F-puations.tn
gold foil experiment :
Debunked through the
*Atomic
projected towards gold foil mass . . .



the
particles that
The actUalmass_ of an atom
and observed
. . .


e. 9) one KC atom 12Pa
* some ✗ particles were deflected :


back * Relative atomic mass
slightly / bounced
. . .




* Majority of ✗ particles
passed The avesagemass-os.am atom
to
oramdeaele, relative
through the gold foil concentrated mass Kaos be atom
is
IÉ_ : positive charge spread out * Molarity
. .
.




chemical
at the centre rather than • concentration of
solution
Atomic structure
the atomic

Mdesogsoluteperlof
electron

Majority of water (mollis)
•-
mass at the nucleus
mfdet.me
••••① depend Molarity
-_

proton






chemical properties
electrons * Maes :

Neutron on valence of substance

elements haveAmount "
* " Different containing 6.022×10
He of





different numbers particles
protons •
Moles __ Mass
Isotopes Tur
the same element with
Isotopes : Atoms of
se prefixes
* "" ""




( | µDa=
different numbers of neutrons .
G "" csameunits
M eorcsandws)
too
e. g) Hydrogen : 11-14-131-1
C' YÉ 14C %
K '
"
carbon : m
19m01 -1
U 10-6

N 10-9

, Electrons
Electrons vs waves
interference :
* constructive



energy
carries /
11111
Have "
coincide




location one wave




from one •
crest




yyyyy ④
Mass other
with crest of the
-




Momentum to another )
( same phase
-



amplitude

M_ M
IX
-

velocity →


Modelled a water.tn
' """

* Destructive interference:
dimensionless

Have :
Amplitude (A)

crest @ onewavecoinikk
particle with the trough
-




tiny Frequency (f) "" "
- "
7¥ another wave

When projected -
wavelength
towards an -
Velocity # →
-
is when
object, there Waves disgrace
behind




a region through gaps Double slit experiment w electrons
called they pass sizes -107,
the object comparable 1
of Shadow
"
Expectation Reality
shadow where Into
"
"
leak and I
enter Laser beam




•¥DD
it cannot regions
screen

:*"


1111M¥ µ !
•-pDÑÉ
• . -

I
☐→
i.

• - - -

'


I
-

-


' "
shadow
"
! at

Distinct shadow
" •

Brightest region
between the two slits the middle
wave-like properties
.




↳ Electrons have some
Wavethat
They can be modelled by @ finding e-
represents probability density
→ Greater amplitude Higher chances -_



of finding e-
* pebroglieeluatton Planck
:
's → constant
* Amplitude : The maximum distance travelled by
a
f=h_
MV
point once wave from the equilibrium position
two troughs of aware
↳ momentum
* Wavelength : Distance between
Number of waves in a Sec
* Frequency :




¥::;¥É-
*

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