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atomic structure

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

2.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

3.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

4.

What is the center of an atom containing protons and neutrons?

a)

nucleus

b)

neutron

c)

proton

d)

electron cloud

5.

What is the number of protons in the nucleus of an atom that determines the chemical properties of an atom?

a)

mass number

b)

atomic mass

c)

atomic number

d)

atomic symbol

6.

What is the combined mass of all the protons and neutrons of an atom and is approximately equal to the number of protons and neutrons?

a)

atomic mass

b)

atomic number

c)

subatomic particles

d)

nucleus weight

7.

What is material that has mass and takes up space?

a)

volume

b)

mass

c)

matter

d)

density

8.

How many protons does sulfur have?

a)

32

b)

16

c)

48

d)

12

9.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
10.
Where are the Electrons found in the structure of an atom?
a)
In the nucleus
b)
In spaces around the nucleus
11.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
12.
How many electrons does this picture show?
a)
4
b)
5
c)
6
d)
3
13.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
14.
The only element with no neutrons in its nucleus.
a)
Oxygen
b)
Helium 
c)
Hydrogen
d)
Lithium
15.
What scientist is best known for his gold foil experiment?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
16.
Who is the first scientist to think that the atom was the smallest unit of matter?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
17.
A mixture that does not look the same throughout:
a)
heterogeneous mixture
b)
homogeneous mixture
c)
the periodic table
d)
water
18.
subatomic particles found on the outermost shell & responsible for the atom's reactivity
a)
neutrons
b)
valence electrons
c)
isotopes
d)
ions
19.
What three sub-atomic particles consist of (make up) the atom/element? 
a)
Protons, Neutrons, and Electrons
b)
Protons, Atomic Mass, and Density
c)
Boiling Point, Protons, and Electrons 
d)
Protons, Quarks, and Neutrons 
20.
How many protons does an Aluminum atom have? (use the picture to help you)
a)
27
b)
13
c)
14
d)
40

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