WorksheetsChemical Reactions
Total questions: 15
Worksheet time: 24mins
Name
Class
Date
1.
A substance that is formed as the result of a chemical reaction is a __________________
a)
Product
b)
Reactant
c)
Starters
d)
Enders
2.
Which of the following is an example of a chemical change?
a)
water freezes to form ice
b)
sugar dissolves in water
c)
gasoline burns in a car engine
d)
a piece of metal expands when it is heated
3.
Which of the following is an example of a chemical change?
a)
rusting of a bicycle
b)
painting a house
c)
washing a dog
d)
tearing up a newspaper
4.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
5.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
6.
A chemical reaction that absorbs heat
a)
Single replacement
b)
Exothermic
c)
Endothermic
d)
Decomposition
7.
Which of the following is NOT a sign of a chemical reaction?
a)
Color changes
b)
Cutting into fourths
c)
Light is produced
d)
Gas is formed
8.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
9.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
10.
What is the pH of pure water?
a)
pH 7
b)
pH 3
c)
pH 12
d)
pH 8
11.
When found in food, acids are ________
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
12.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
13.
Acid in vinegar:
a)
Hydrochloric acid
b)
Sulfuric acid
c)
Acetic acid
d)
Carbonic acid
14.
Reaction between acid and alkali producing salt and water:
a)
Combustion
b)
Neutralization
c)
Precipitation
d)
Decomposition
15.
Most foods are
a)
Acid
b)
Basic
c)
Neutral
d)
salts
100 %
