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20 questions
What is the pH range of an acid?
4-6
1-7
1-6
8-14
What would happen to blue litmus paper if it came into contact with an acid?
It would turn red
It would turn green
It would stay blue
It would turn pink
Which of the following pH values would be the weakest acid?
1
3
5
6
Which of the following pH values would be the strongest acid?
1
3
4
6
Which of the following chemical formulas is NOT an acid?
HBr
HF
HCl
LiOH
What would happen to red litmus paper when it encounters a base?
It turns blue
It stays red
It turns purple
It turns green
A substance is found to have the following characteristics:
Very bitter taste
Feels slippery to the touch
Produces OH- ions when dissolved in water
In what category would the substance be classified?
acid
base
enzyme
fatty acid
HF is...
an acid
a base
a salt
an ionic compound
KOH is ...
an acid
a base
a salt
an ionic compound
7
11
Which of these pH values represent an acid?
4
8
10
12
Milk is a very weak acid. What might its pH value be?
6
7
4
12
The strongest bases have pH values close to
0
14
7
5
Bases turn blue litmus paper red.
True
False
Which option below places the pH values in the correct order, from WEAKEST ACID to STRONGEST ACID?
1,4,5,6
6,4,3,1
7,9,11,14
13,12,10,8
What does pH stand for?
Percent of hydrogen
Power of Hydrogen
Phenolphthalein
Phosphorus:Hydrogen ratio
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