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Atoms and Elements Review

Total questions: 40

Worksheet time: 29mins

Name
Class
Date
1.

One or two letter abbreviation used to represent an element is called a(n) ________

a)

chemical symbol

b)

element sign

c)

atomic number

d)

molecule

2.
Particles in an atom's nucleus that are neutral and have no charge are 
a)
protons.
b)
electrons.
c)
neutrons.
3.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
cannot be determined 
4.

What is the atomic number of an element with three protons?

a)

2

b)

1

c)

3

d)

6

5.
A negatively charged particle that moves around the nucleus is a(n)
a)
proton
b)
neutron
c)
electron
d)
quark
6.
What charge does a proton have?
a)
Negative
b)
Positive
c)
Neutral
7.

Which atom has the most protons? Use your Periodic Table of Elements!

a)

Hydrogen

b)

Iron

c)

Lead

d)

Mercury

8.
An atom has 54 protons, 54 electrons, and 77 neutrons. What is the atomic number of the atom?
a)
54
b)
77
c)
131
d)
23
9.
Electrons are located 
a)
in the nucleus
b)
outside the nucleus
10.
What is the atomic mass for Sodium (Na)?
a)
11
b)
23
c)
12
d)
22
11.

What is the element symbol for Potassium?

a)

K

b)

Pt

c)

Ba Na Na

d)

PM

12.

What are the 3 particles that make-up the atom?

a)

protons, neutrons, and isotopes

b)

neutrons, isotopes, and electrons

c)

positives, negatives, and electrons

d)

protons, neutrons, and electrons

13.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
14.
Use your periodic table to answer the following question.
Which of the following atoms has 14 electrons?
a)
Carbon (C)
b)
Silicon (Si)
c)
Sulfur (S)
d)
Argon (Ar)
15.
What is the name of this element?
a)
K
b)
Potassium
c)
39.098
d)
19
16.
What is the atomic mass of this element? 
a)
Potassium
b)
K
c)
19
d)
39.098
17.
What is the atomic number of this element? 
a)
19
b)
Potassium
c)
39.098
d)
K
18.
What is the chemical symbol of this element? 
a)
Potassium
b)
K
c)
39.098
d)
19
19.
What element is this? 
a)
Oxygen
b)
Carbon
c)
Hydrogen
d)
Helium
20.
What element is this? 
a)
Hydrogen
b)
Helium
c)
Lithium
d)
Beryllium
21.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
22.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
23.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
24.
How many atoms are in the element Carbon in this compound?
H2C3O4N5
a)
2
b)
3
c)
4
d)
5
25.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
26.
A subscript is the small number below a(n) ________ that tells the number of _______ of that element.
a)
element symbol; atoms
b)
atom; element symbol
c)
subscript; protons
d)
compound; elements
27.

How many protons does this atom have?

a)

4

b)

5

c)

9

d)

13

28.

How many neutrons are in this atom?

a)

9

b)

18

c)

19

d)

10

e)

28

29.

Subatomic particle with a negative charge

a)

proton

b)

electron

c)

neutron

d)

nucleus

30.

Subatomic particle with no charge

a)

proton

b)

neutron

c)

electron

d)

nucleus

31.

Subatomic particle with a positive charge

a)

proton

b)

neutron

c)

electron

d)

isotope

32.

equal to the number of protons plus neutrons in the nucleus of an atom

a)

atomic mass

b)

atomic number

c)

isotope

d)

valence electrons

33.

The nucleus of an atom consist of:

a)

electrons

b)

protons and electrons

c)

protons and neutrons

d)

neutrons and electrons

34.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
35.
The central region of an atom where its neutrons and protons are is its _______.
a)
Nucleus 
b)
Electron cloud
c)
Core 
d)
Center 
36.
What is the chemical symbol for the element hydrogen
a)
H
b)
He
c)
h
d)
he
37.
What is the chemical symbol for the element Silicon
a)
S
b)
Si
c)
si
d)
Sl
38.
What is the chemical symbol for the element copper?
a)
co
b)
c
c)
Cu
d)
cu
39.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
40.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 

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