wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

COUNTING ATOMS

Total questions: 37

Worksheet time: 37mins

Name
Class
Date
1.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
2.
How many Oxygen are in H2O?
a)
1
b)
2
c)
0
d)
4
3.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
4.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
5.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
6.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
7.
(Element or Compound)
       C2H8O 
a)
Element
b)
Letters
c)
Numbers
d)
Compound
8.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
9.
In this compound structure of alcohol, how many Hydrogen atoms are there?
a)
2
b)
4
c)
6
d)
8
10.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
11.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
12.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
13.
The number of Na's in Na₂CO₃
a)
1
b)
2
c)
3
d)
6
14.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
15.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
16.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
17.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
18.
How many Chlorine are in MgCl2?
a)
2
b)
1
c)
3
19.
How many Nitrogen are in 2AlN?
a)
4
b)
5
c)
1
d)
2
20.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
21.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
22.
How many atoms of Oxygen are in this compound?
a)
1
b)
2
c)
3
d)
4
23.
How many atoms are in the element Carbon in this compound?
H2C3O4N5
a)
2
b)
3
c)
4
d)
5
24.
How many TOTAL atoms are in this compound?
H2C3O4N5
a)
5
b)
14
c)
15
d)
19
25.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
26.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
27.
a)
Periods
b)
Groups
28.
a)
Periods
b)
Groups
29.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
30.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
31.
a)
Group 1
b)
Group 17
c)
Group 18
d)
Group 2
32.
a)
Group 1
b)
Group 17
c)
Group 18
d)
Group 2
33.

In a ___________change, a substance changes into a different substance.

a)

Physical

b)

Chemical

34.

Which of these is NOT a sign that a chemical change has occurred?

a)

A loss of transparency

b)

An unexpected color change

c)

A temperature change

d)

The formation of a precipitate

35.

The Law of Conservation of Mass states

a)

that matter exists in all states and reacts the same

b)

that matter can only be changed into new substances by introducing a catalyst

c)

that matter exists in the same state throughout any chemical change

d)

that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

36.

How many F atoms are in this compound?

6MgF2

a)

2

b)

6

c)

8

d)

12

37.

An gel ice pack getting cold after you put it in the freezer for an hour.

a)

Chemical change

b)

Physical change

Similar Resources on Wayground

Chemical equation

36 questions

Chemical equation

quiz

Worksheet

•

11th - 12th Grade

Significant Figures

32 questions

Significant Figures

quiz

Worksheet

•

10th Grade - University

Chemistry of Life

41 questions

Chemistry of Life

quiz

Worksheet

•

10th - 12th Grade

HUYNH - Naming and Writing Formulas for Covalent Compounds and Acids

40 questions

HUYNH - Naming and Writing Formulas for Covalent Compounds and Acids

quiz

Worksheet

•

10th - 12th Grade

History of the Atom

38 questions

History of the Atom

quiz

Worksheet

•

9th - 12th Grade

Moles and Stoichiometry Review

34 questions

Moles and Stoichiometry Review

quiz

Worksheet

•

10th - 12th Grade

topic 5 stoichiometry

40 questions

topic 5 stoichiometry

quiz

Worksheet

•

10th - 12th Grade

Naming and Writing Compounds

35 questions

Naming and Writing Compounds

quiz

Worksheet

•

8th - 12th Grade