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Unit 2 review

Total questions: 47

Worksheet time: 2hrs 38mins

Name
Class
Date
1.
Who was the first person to study atomic theory?
a)
Dalton
b)
Democritus
c)
Chadwick
d)
Miller
2.
Who was the first person to study atomic theory?
a)
Dalton
b)
Democritus
c)
Chadwick
d)
Miller
3.
True or False? John Dalton believed that moving electrons exist in electron clouds around the nucleus. 
a)
False
b)
True 
4.
What was the name of J.J Thomsons' model of atomic structure. 
a)
Electron Cloud Model 
b)
Electron Sea Model
c)
Plum Pudding Model 
d)
Bohr Model
5.
What does the Bohr model suggest?
a)
Atoms are small, hard, indivisible objects. 
b)
That protons in the nucleus are attracted to electrons in the electron clouds. 
c)
That electrons travel around the nucleus of an atom in orbits or definite paths.
6.
Was John Daltons theory earlier than Niels Bohr?
a)
No
b)
Yes
7.
Who proposed that the atom consists mostly of empty space?
a)
Bohr
b)
Dalton
c)
Rutherford
d)
Chadwick
8.
The word 'atomos' termed by Democritus means:
a)
Indivisible
b)
Unconscious
c)
Blue
d)
Nuclear powered
9.
Earth, Air, Fire, and Water were the fundamental elements propose by ___.
a)
Aristotle
b)
Democritus
c)
Plato
d)
Galileo
10.
Developed the “chocolate chip cookie” model of the atom
a)
James Chadwick
b)
Niels Bohr
c)
Schrodinger & Heisenberg
d)
J.J. Thomson
11.
Developed the “billiard ball” model of the atom
a)
Niels Bohr
b)
John Dalton
c)
J.J. Thomson
d)
Ernest Rutherford
12.
Developed the very first atomic theory
a)
Ernest Rutherford
b)
Schrodinger & Heisenberg
c)
Niels Bohr
d)
John Dalton
13.
Discovered the electron
a)
Bohr
b)
Dalton
c)
Rutherford
d)
Thomson
14.

First person to propose the concept of an atom

a)

Rutherford

b)

Democritus

c)

Dalton

d)

Bohr

15.

Which of the following shows the correct order of Atomic Theory Timeline

a)

Rutherford, Bohr, Dalton, Democritus, Thomson

b)

Bohr, Democritus, Thomson, Rutherford, Dalton

c)

Dalton, Thomson, Rutherford, Bohr, Democritus

d)

Democritus, Dalton, Thomson, Rutherford, Bohr

16.

Which Scientist created this model

a)

Democritus

b)

Chadwick

c)

Bohr

d)

Rutherford

17.

Which of the following has the longest wavelength?

a)

microwaves

b)

UV rays

c)

Infrared

d)

Gamma rays

18.

Which of the following has the most energy?

a)

Red

b)

Blue

c)

Green

d)

Yellow

19.

Which of the following has the most energy?

a)

X-rays

b)

The color green

c)

Microwaves

d)

Infrared

20.

The correct value for the speed of light in a vacuum is

a)

3,000,000,000 m/s

b)

600,000,000 m/s

c)

300,000,000 m/s

d)

18,600 m/s

21.

Calculate the wavelength of the yellow light emitted by the street light, if the frequency of the radiation is 5.10x1014Hz.

a)

5.12 x 10-7m

b)

5.88 x 10-7 m

c)

4.20 x 1014m

d)

3.0 x 108m

22.

Energy is measured in........

a)

Wavelength

b)

Meters

c)

Joules

d)

Frequency

23.

The symbol for wavelength Is?

a)

nu

b)

lambda

c)

vi

d)

meters

24.

On a wave, the distance between crest to crest is called?

a)

amplitude

b)

wavelength

c)

frequency

d)

trough

25.

Calculate the wavelength of blue light emitted by a mercury lamp with a frequency of 6.88 x 1014 Hz.

a)

3.44 x 10-6m

b)

4.36 x 10-7m

c)

3.0 x 108 m

d)

633 m

26.

What is the frequency of light with a wavelength of

4.8 x 10-7 meters?

a)

5.34 x 10-9 Hz

b)

3.0 x 108 Hz

c)

3.21 x 1017 Hz

d)

6.25 x 1014 Hz

27.

The unit of measure for frequency is?

a)

Seconds

b)

Meters

c)

Hertz

d)

Liters

28.
Laws are usually mathematically defined.
a)
True
b)
False
29.
A scientific ____________ is a broad explanation for events that is widely accepted as true.
a)
law
b)
theory
c)
observation
d)
method
30.
Laws tells us that it happens but doesn’t describe how or why.
a)
True
b)
False
31.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
32.
Another word for prediction or educated guess is: ________________
a)
hypothesis
b)
conclusion
c)
experiment
d)
data
33.

Germs cause diseases in living organisms.

a)

Hypothesis

b)

Theory

c)

Law

34.

If other people are watching you, then you will be better behaved.

a)

Hypothesis

b)

Theory

c)

Law

35.

Which of the following is NOT part of the electromagnetic spectrum?

a)

Ultraviolet

b)

Sound waves

c)

Infrared

d)

Gamma rays

36.

Who first suggested that matter is made up of tiny, indivisible particles called atoms?

a)

Aristotle

b)

Democritus

c)

Bohr

d)

Rutherford

37.

Which property of a wave determines its energy?

a)

Speed

b)

Frequency

c)

Wavelength

d)

Amplitude

38.

Which of these are parts of the atom?

a)

Protons, ProAthletes, Neutrons

b)

Neutrons, Protons, Electrons

c)

Mitochondria, Electrons, Protons

d)

Oxygen

39.

Which of these has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Oatmeal

40.

Where are electrons found?

a)

Outside the nucleus

b)

Under my bed

c)

Inside the nucleus

d)

Inside a proton

41.

Which charge does a proton have?

a)

Neutral

b)

Negative

c)

No charge- battery is dead

d)

Positive

42.

Neutrons have a ____________ charge.

a)

Neutral, or no charge

b)

Positive

c)

Negative

d)

Neutron? I don't know what that is!

43.

Select which things are made up of atoms:

a)

Orange juice

b)

A desk

c)

You and me

d)

Grass

44.

This particle determines which element it is.

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mrs. Wagner

45.

True or false: Atoms make up everything around you.

a)

True

b)

False

46.

Which particles are inside the nucleus?

a)

Electrons

b)

My crumbs from breakfast

c)

Neutrons

d)

Protons

47.

What is the smallest unit of matter?

a)

An element

b)

A drop of water

c)

A speck of dust

d)

An atom

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