Chem 6A Quiz 1_key_Sect_E09_E04_E05

Chem 6A Quiz 1_key_Sect_E09_E04_E05 -...

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Unformatted text preview: Chem
6A
Quiz
1
(10/06/2008)
Section
E09
 1) In
the
following
pairs,
which
of
the
two
have
a
longer
wavelength?
(Circle
your
choice)
 
 a. Radio
waves
vs.
Ultraviolet
light
(2pts)
 
 b. Orange
light
vs.

Blue
light
(2pts)
 
 c. Infrared
vs.
X‐rays
(2pts)
 
 2) Please
fill
in
the
following
information
(you
may
use
the
attached
periodic
table
to
assist
 you)
 a. The
atomic
number
of
___Mg______
is
12.(1pt)
 
 b. The
mass
number
of
elemental
phosphorous
is
____30.97___.
(1pt)
 
 c. The
isotope__76Ge___
has

44
neutrons,
32
protons,
and
32
electrons.
1pt)
 
 d. The
difference
between
atomic
number
and
mass
number
is
that
atomic
number
 is
the
number
of
_protons_

(1pt)
and
mass
number
is
the
sum
of
the
number
of
 _protons_
(1pt)
and
the
number
of
_neutrons_.
(1pt)
 
 e. What
is
an
isotope?
(2pts)

 
 One
of
two
atoms
that
have
the
same
atomic
number
but
differ
in
mass
number.

 
 
 
 
 
 
 
 
 
 (Atkins/Jones)
 3) T/F
 
 _F_
Ernest
Rutherford’s
cathode
rays
experiments
allowed
him
to
discover
the
electron.
 (1pts)
 
 
 _T_
Robert
Millikan
studied
small
electrically
charged
oil
droplets
to
determine
the
 charge
and

 
 mass
of
an
electron.
(1pts)
 

 
 4) What
is
the
frequency
of
red
light
(wavelength
of
red
light
is
approximately
700nm)?
 (5pts)

 
 
 
 
 c
=
(ν)
(λ)
 8 
 
 

2.998*
10 
m/s
=
(ν)
(700
*
10‐9m)
 
 
 
 




(ν)
=
4
*
1014
Hz
or
s‐1
 
 Chem
6A
Quiz
1
(10/08/2008)
Section
E04
 1) 
In
the
following
pairs,
which
of
the
two
have
a
longer
wavelength?
(Circle
your
choice)
 
 a. Radio
waves
vs.
Ultraviolet
light
(2pts)
 
 b. Orange
light
vs.

Blue
light
(2pts)
 
 c. Ultraviolet
vs.
gamma
rays
(2pts)
 
 2) Please
fill
in
the
following
information
(you
may
use
the
attached
periodic
table
to
assist
 you)
 a. The
atomic
number
of
___Mg______
is
12.(1pt)
 
 b. The
mass
number
of
elemental
phosphorous
is
____30.97___.
(1pt)
 
 c. The
isotope__76Ge___
has

44
neutrons,
32
protons,
and
32
electrons.
1pt)
 
 d. The
difference
between
atomic
number
and
mass
number
is
that
atomic
number
 is
the
number
of
_protons_

(1pt)
and
mass
number
is
the
sum
of
the
number
of
 _protons_
(1pt)
and
the
number
of
_neutrons_.
(1pt)
 
 e. What
is
an
isotope?
(2pts)

 
 One
of
two
or
more
atoms
that
have
the
same
atomic
number
but
differ
in
mass
 number.
(Atkins/Jones)
 
 3) What
is
the
difference
between
a
cation
and
an
anion?

Give
an
example
of
each.
(2pts)
 
 A
cation
is
a
positively
charged
ion
and
has
fewer
electrons
than
protons.
 
 
 Example:
Na+
 
 An
anion
is
a
negatively
charged
ion
has
more
electrons
than
protons.
 
 
 Example:
Cl‐
 
 4) What
is
the
frequency
of
green
light
(wavelength
of
green
light
is
approximately
 530nm)?
(4pts)

 
 
 
 
 
 
 
 

2.998*
108
m/s
=
(ν)
(530
*
10‐9m)
 
 















(ν)
=
5.7
*
1014
Hz
or
s‐1
 
 















c
=
(ν)
(λ)
 Chem
6A
Quiz
1
(10/08/2008)
Section
E05
 1) 
In
the
following
pairs,
which
of
the
two
have
a
longer
wavelength?
(Circle
your
choice)
 a. Radio
waves
vs.
Infrared
light
(2pts)
 
 b. Green
light
vs.

Blue
light
(2pts)
 
 c. Ultraviolet
vs.
gamma
rays
(2pts)
 
 2) Please
fill
in
the
following
information
(you
may
use
the
attached
periodic
table
to
assist
 you)
 a. The
atomic
number
of
___Co_
is
27.(1pt)
 
 b. The
mass
number
of
elemental
carbon
is
___12.01__.
(1pt)
 
 c. The
isotope___85Mn___
has
60
neutrons,
25
protons,
and
25
electrons.
1pt)
 
 d. The
difference
between
atomic
number
and
mass
number
is
that
atomic
number
 is
the
number
of
__protons___

(1pt)
and
mass
number
is
the
sum
of
the
number
 of
__protons___
(1pt)
and
the
number
of
_neutrons_.
(1pt)
 
 e. What
is
an
isotope
(2pts)
 
 
 One
of
two
or
more
atoms
that
have
the
same
atomic
number
but
differ
in
mass
 number.
(Atkins/Jones)
 
 
 3) What
is
the
frequency
of
yellow
light
(wavelength
of
yellow
light
is
approximately
 580nm)?
(4pts)
 
 
 
 
 
 
 
 

2.998*
108
m/s
=
(ν)
(530
*
10‐9m)
 
 















(ν)
=
5.2
*
1014
Hz
or
s‐1
 
 















c
=
(ν)
(λ)
 4) T/F
 
 _T_
J.J.
Thompson’s
cathode
rays
experiments
allowed
him
to
discover
the
electron.
 (1pts)
 
 
 _F_
Robert
Millikan
studied
small
electrically
charged
ethanol
droplets
to
determine
the
 charge
and
mass
of
an
electron.
(1pts)
 ...
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This note was uploaded on 12/07/2009 for the course CHEM CHEM 6A taught by Professor Czarkowski during the Fall '07 term at UCSD.

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