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Jouer Froggy Jumps
1. What is the pH value of a neutral substance?
A
7
B
0
C
14
2. What color does red litmus paper turn in the presence of an acid?
A
Yellow
B
Blue
C
Red
3. Which of the following is a characteristic of bases?
A
Sour taste
B
Bitter taste
C
Colorless
4. What is the pH value of a strong acid?
A
7
B
Below 3
C
Above 10
5. What is the pH value of a weak base?
A
Above 7
B
Below 1
C
4
6. What is the pH value of a strong base?
A
Above 10
B
Below 7
C
5
7. What is the pH value of water?
A
6
B
7
C
8
8. What does the pH scale measure?
A
Neutral solutions
B
Acidic and basic solutions
C
Both answers are correct
9. Which of the following is a characteristic acids?
A
Sour taste
B
Bitter taste
C
pH value above 7
10. You have a beaker containing a solution of hydrochloric acid (HCl). To neutralize the acid, which substance should you add to the beaker?
A
Distilled water
B
Baking soda (weak base)
C
More hydrochloric acid (HCl)