Use the following diagram to answer questions 2-5.
The pH scale may be used to differentiate between acids and bases.
The pH of four different samples is tested. These are the results:
Question 2
2.
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
An unknown sample is tested with litmus paper. The red litmus paper turns blue and the blue litmus paper stays blue. What does this mean?
More tests need to be done.
The sample is an acid.
The sample is neutral.
The sample is a base.
Which of the following descriptions best matches the results, starting with Solution 1?
base, neutral, base, acid
neutral, base, acid, base
acid, neutral, acid, base
acid, neutral, base, base
Which of the following solutions is the most acidic?
Solution 1
Solution 2
Solution 3
Solution 4
Which of the following solutions is the most basic?
Solution 1
Solution 2
Solution 3
Solution 4
What solution provides the best results for washing hair, considering human hair is slightly acidic?
basic shampoo
acidic shampoo
neutral shampoo
none of the above
Which of the following indicator results is correct when an indicator changes color?
Blue litmus stays blue with a base.
Blue litmus stays blue with an acid.
Red litmus turns blue with an acid.
Red litmus stays red with a base.
You are given an unidentified solution along with litmus paper. You dip the blue litmus paper in the solution and it turns red. What do you know about the solution?
a. The solution is an acid.
b. The solution is a base.
c. The solution is neutral.
d. You just did a decomposition reaction.
A solution with a pH of 7.4 (human blood) is considered
basic.
acidic.
neutral.
concentrated.
Acidic and basic properties of solutions are compared by arranging them using the
