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Exam 2: Light, EM Spectrum, Atomic Structure

Total questions: 54

Worksheet time: 26mins

Name
Class
Date
1.
Which electromagnetic waves have the highest frequencies and the shortest wavelengths?
a)
microwaves
b)
visible light
c)
gamma rays
2.
Which electromagnetic waves are used in ovens and cell phone communications?
a)
Infrared rays
b)
ultraviolet rays
c)
microwaves
3.
Which type of waves are used in broadcasting?
a)
radio waves
b)
infrared rays
c)
x-rays
4.
Which of the following has wavelengths longer than microwaves?
a)
Infrared waves
b)
Radio waves
c)
Visible light
5.
Which of the following has frequencies higher than ultraviolet rays?
a)
visible light
b)
infrared rays
c)
x-rays
6.
Which electromagnetic waves help doctors detect broken bones inside your body?
a)
gamma rays
b)
x-rays
c)
ultraviolet rays
7.
Which of the following lists the electromagnetic waves in order of increasing wavelength?
a)
X-rays, visible light, radio waves
b)
gamma rays, microwaves, UV rays
c)
infrared rays, radio waves, x-rays
8.
Which of the following is chromate?
a)
CrO42-
b)
CrO32-
c)
CrO22-
d)
CrO2-
9.
Which of the following is nitrate?
a)
NO-
b)
NO2-
c)
NO3-
d)
NO4-
10.
CN-
a)
cyanide
b)
carbon nitride
11.
OH-
a)
hydronium
b)
hydroxide
12.
SO42-
a)
sulfate
b)
sulfite
13.
What is the name of this polyatomic ion?  MnO4-
a)
Carbonate
b)
Permanganate
c)
Phosphate
d)
Chromate
14.
ClO3-
a)
Chlorate ion
b)
Chlorite ion
c)
Hypochlorite ion
d)
None of the above
15.

Striking a mint can cause light.

a)

true

b)

false

16.

Copper had a ____________ flame in the flame test lab.

a)

black

b)

orange

c)

green

17.

When an electron ____________ we see light.

a)

moves an energy level

b)

goes up the energy ladder

c)

falls

d)

gets cold

18.

Violet light has the _________ frequency of the colors.

a)

highest

b)

lowest

19.

Ultraviolet waves have _______ than visible light.

a)

longer wavelengths

b)

longer durations

c)

higher frequencies

20.

Assuming the wave shapes are drawn to scale, which electromagnetic radiation waves would you expect to carry the most energy?

a)
b)
c)
21.

What is the frequency of an electromagnetic wave with a wavelength of 5.5 meters? Use the following quantity for the speed of light:

3.0×108 m/s

a)

5.5 × 107 Hz.

b)

7.4 × 10–10 Hz.

c)

1.4 × 109 Hz.

22.

Light travels more slowly through glass than it does in a vacuum. A light wave traveling through glass has a wavelength of 3.0 millimeters and a frequency of 67 gigahertz. How can the speed of light in glass be calculated?

a)

Divide 67 GHz by 3.00 mm, and then divide the result by the speed of light in a vacuum.

b)

Divide 67 GHz by 3.00 mm.

c)

Multiply 3.00 mm by 67 GHz.

23.

Which EM waves have the longest wavelength?

a)

radio

b)

x-rays

c)

ultraviolet

d)

gamma rays

24.

Which EM waves have the shortest wavelength?

a)

radio

b)

x-rays

c)

ultraviolet

d)

gamma rays

25.

Which EM waves are invisible? (more than one correct answer)

a)

radio

b)

visible

c)

ultraviolet

d)

gamma rays

26.

Which EM waves are have a SHORTER wavelength than visible?

a)

radio

b)

none

c)

infrared

d)

x-rays

27.

Which EM waves are have the lowest frequency?

a)

radio

b)

none

c)

infrared

d)

x-rays

28.

Which EM waves are have the highest energy & are the most dangerous?

a)

radio

b)

gamma rays

c)

infrared

d)

x-rays

29.

Which color waves have the lowest frequency?

a)

red

b)

yellow

c)

green

d)

violet

30.

What happens to frequency when wavelength decreases?

a)

stays the same

b)

decreases

c)

increases

d)

There is no relationship between wavelength & frequency.

31.

Sodium

a)

red

b)

orange

c)

yellow

d)

green

32.

Lithium Flame Test?

a)

red

b)

orange

c)

yellow

d)

green

33.

strontium

a)

red

b)

yellow

c)

orange

d)

blue

34.
Metal ion with a lilac flame
a)
Na+
b)
K+
c)
Na2+
d)
K2+
35.

Who was the first person to "think" of an atom?

a)

Democritus

b)

J.J. Thompson

c)

Rutherford

d)

Bohr

36.

What experiment was used to discover the nucleus?

a)

Cathode Ray Tube

b)

Gold Foil

c)

Chromatography

d)

Gel Electrophorese

37.

Which one of these is Dalton's Model?

a)
b)
c)
d)
38.

Which model was created after the discovery of the electron cloud?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

39.

Which model was created after the discovery of the nucleus?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

40.

Who discovered the nucleus?

a)

Rutherford

b)

Bohr

c)

J.J. Thompson

d)

Democritus

41.

What experiment was used to discover electrons?

a)

Cathode Ray Tube

b)

Gold Foil

c)

Chromatography

d)

Gel Electrophorese

42.

Who discovered electrons?

a)

Rutherford

b)

Bohr

c)

J.J. Thompson

d)

Democritus

43.

Symbol for Hydrogen

a)

Hy

b)

He

c)

h

d)

H

44.

Symbol for Helium

a)

HE

b)

H

c)

He

d)

Hl

45.

What is the symbol for Nitrogen?

a)

Ni

b)

N

c)

NI

d)

Ng

46.

What is the symbol for Oxygen?

a)

Ox

b)

OG

c)

O

d)

Og

47.

What is the symbol for Sodium?

a)

S

b)

So

c)

NA

d)

Na

48.

What is the symbol for Sulfur?

a)

Na

b)

S

c)

Su

d)

SF

49.

What is the symbol for Phosphorus?

a)

PH

b)

Ph

c)

F

d)

P

50.

What is the symbol for Calcium?

a)

CA

b)

Ca

c)

C

d)

Cl

51.

What is the symbol for Chlorine?

a)

Ch

b)

Cl

c)

C

d)

CH

52.

What is the unit for wavelength?

a)

m

b)

hertz

c)

1/seconds

d)

Joule

53.

What is the unit for frequency?

a)

m

b)

hertz

c)

v

d)

Joule

54.

What is the unit for Energy?

a)

m

b)

hertz

c)

1/seconds

d)

Joule

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