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Unit 3: Light Flashcards | StudBud
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Unit 3: Light
Unit 3: Light
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Review of light, E=hf, c= f(lambda), periodic table, etc.
Flashcards
36 cards
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Practice quiz
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Questions
36
Answers
1
What color of visible light has the longest wavelength?
red
violet
blue
green
2
Why don't you need to be afraid of radio waves?
high frequencies
low energy
very rare
can't be seen
3
which element has 12 protons?
aluminum
hydrogen
carbon
magnesium
4
Which of these alkaline metals has the largest atomic weight?
barium
radium
strontium
magnesium
5
Which of these values should have units on them?
speed of light
Planck's constant
all of these
Avogadro's number
6
What are the units on molar mass?
g/cc
g
g/mol
atoms/mol
7
Which type of radiation causes skin to warm in sunlight?
radio
IR
UV
microwaves
8
What color did lithium burn in the lab?
pale purple
green
hot pink
orange
9
What color did copper burn in the lab?
green
orange
red
pale purple
10
What is the speed of a x-ray?
6.626 E-34 Js
zero
3 E8 m/s
300 mph
11
What is a photon?
spectral line
a type of energy
a packet of light energy
a type of laser
12
What color did potassium burn in the lab?
pale purple
orange
red
green
13
The exponent on visible light frequencies is
12
16
14
1
14
.5 moles of any substance has how many particles?
1.5 E23
6.022 E12.5
1
3 E23
15
The fact that you can either know where an electron is or how fast it is going was proposed by
Einstein
Heisenberg
Planck
Hertz
16
Which element burned a yellowish orange in the lab?
lithium
copper
barium
sodium
17
What color of visible light has the lowest frequency?
violet
blue
green
red
18
When do glow sticks glow?
when electrons are absorbed
when electrons absorb energy
when energy is released as photons
19
The photoelectric effect was first noticed by
Hertz
Planck
deBroglie
Einstein
20
What is the speed of a radio wave?
zero
300 mph
3 E8 m/s
6.626 E-34 Js
21
The unit of wavelength is the ...
meter
Hertz
Joule
Newton
22
Which of these is Avogadro's number?
6.626 E-34 Js
3 E 8 m/s
9.81 m/s/s
6.022 E23 atoms/mol
23
Which of these isn't really a color of visible light?
red
indigo
blue
violet
24
The unit of frequency is the ...
Joule
Hertz
Newton
meter
25
What unit remains when you multiply Planck's constant times a Hertz?
Js
1/s
g/mol
Joule
26
In c=f(lambda) what is the value for c?
6.022 E23 atoms/mol
6.626 E-34 Js
9.81 m/s/s
3 E 8 m/s
27
Which of these isn't an inert gas?
Ra
Xe
Kr
Ar
28
The unit of energy is the ...
Newton
Joule
meter
Hertz
29
What do you always write after atomic weights?
atoms/mol
atoms
mol
g/mol
30
Which of these is an alkali metal?
zinc
sodium
copper
magnesium
31
In fireworks, the green color is usually what type of compound?
strontium
barium
lithium
zinc
32
What temperature of water produced the weakest glow for the glow sticks?
wamer
room
cold
33
In E=hf, what is the value for h?
6.626 E-34 Js
9.81 m/s/s
6.022 E23 atoms/mol
3 E 8 m/s
34
Who calculated the spectral lines for hydrogen?
Bohr
Planck
Heisenberg
Einstein
35
Which type of radiation causes skin damage?
radio
UV
IR
microwaves
36
What does it mean to be quantized?
to fly to Australia
to be light
to only allow certain values
to be an electron
