NEW
Font size
S
M
L
XL
WorksheetsChemical Equations
Total questions: 33
Worksheet time: 2hrs 36mins
Name
Class
Date
1.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
2.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
3.
Read the following chemical formula: C6H12O6. How many hydrogen atoms are in the formula?
a)
12
b)
6
c)
4
4.
What are the reactants in the following chemical equation?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
5.
What are the products in the following chemical equation?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
6.
The Law of Conservation of Mass states that ALL matter....
a)
can be created and destroyed
b)
cannot be created nor destroyed but can change form
c)
cannot be created nor destroyed but can be transfered
d)
can be created but not destroyed
7.
Coefficients tell us how many ________ there are of an element in a compound.
a)
Elements
b)
Atoms
c)
Molecules
8.
Subscripts are the _________ numbers in a chemical formula.
a)
Smaller
b)
Larger
9.
Coefficients are the _________ numbers in a chemical formula.
a)
Smaller
b)
Larger
10.
How many ELEMENTS are in the compound H2O
a)
1
b)
2
c)
3
d)
4
11.
How many ELEMENTS are in the compound O2
a)
1
b)
2
c)
3
d)
4
12.
How many ELEMENTS are in the compound C6H12O6
a)
1
b)
2
c)
3
d)
4
13.
How many ATOMS of Carbon are in 3C2H4O
a)
2
b)
3
c)
4
d)
6
14.
How many ATOMS of Oxygen are in 3Fe2O3
a)
2
b)
3
c)
6
d)
9
15.
How many TOTAL atoms are in 2H2SO4
a)
2
b)
4
c)
7
d)
14
16.
How many TOTAL atoms are in 2CaO2
a)
2
b)
3
c)
5
d)
6
17.
Is the following equation balanced or unbalanced ?
Al + O2 --> Al2O3
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
18.
Is the following equation balanced or unbalanced ?
N2 +3 H2 --> 2NH3
N2 +3 H2 --> 2NH3
a)
Balanced
b)
Unbalanced
19.
Is the following equation balanced or unbalanced ?
2HgO --> Hg + O2
2HgO --> Hg + O2
a)
Balanced
b)
Unbalanced
20.
Composed of one kind of atom
a)
Compound
b)
Element
c)
Mixture
d)
Homogeneous Mixture
21.
Is this balanced?
2HgO → 2Hg + O2
2HgO → 2Hg + O2
a)
Yes
b)
No
22.
This appears on the left side of a chemical formula, and represents how many molecules there are.
a)
An Atom
b)
The Subscript
c)
A Molecule
d)
The Coefficient
23.
How many hydrogen atoms are in this chemical formula:
a)
4 hydrogen atoms
b)
1 hydrogen atom
c)
2 hydrogen atoms
d)
3 hydrogen atoms
24.
How many molecules are in this chemical formula?
a)
4 Molecules
b)
6 Molecules
c)
2 Molecules
d)
5 Molecules
25.
How many oxygen atoms are in this chemical formula?
a)
7 oxygen atoms
b)
4 oxygen atoms
c)
3 oxygen atoms
d)
1 oxygen atoms
26.
How many oxygen atoms are in this chemical formula?
a)
6 oxygen atoms
b)
2 oxygen atoms
c)
3 oxygen atoms
d)
4 oxygen atoms
27.
How many molecules are in this chemical formula?
a)
5 molecules
b)
4 molecules
c)
2 molecules
d)
6 molecules
28.
The one or two letters used to represent elements
a)
Yield sign
b)
Coefficient
c)
Symbol
d)
Subscript
29.
Element or compound?
H2O
H2O
a)
element
b)
compound
30.
Element or compound?
O2
O2
a)
Element
b)
Compound
31.
This is used to represent the number of each atom being represented.
a)
A Exponent
b)
The Coefficient
c)
A Molecule
d)
The Subscript
32.
A group of atoms bonded together.
a)
A Molecule
b)
The Coefficient
c)
The Subscript
d)
An Atom Party
33.
The products of respiration are
a)
carbon dioxide and water
b)
glucose and oxygen
c)
methane and oxygen
d)
iron oxide
Reset
