pH Scale Review
Quiz by Oksana Tariche
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- Q 1/12Score 0
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Bleach (NaClO), which is a substance used for cleaning and disinfecting, has a pH of 13.5. Which of these phrases describes bleach?
29slightly basic
highly basic
slightly acidic
highly acidic
- Q1
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Bleach (NaClO), which is a substance used for cleaning and disinfecting, has a pH of 13.5. Which of these phrases describes bleach?
slightly basic
highly basic
slightly acidic
highly acidic
120s - Q2
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Pure water has a pH of 7. Which of these phrases describes pure water?
acidic
basic
mixture
neutral
120s - Q3
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Human blood normally has a pH of 7.5. Which of these phrases describes blood?
highly acidic
slightly basic
highly basic
slightly acidic
120s - Q4
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Human saliva normally has a pH of 6.3 - 6.6 . Which of these phrases describes saliva?
highly acidic
slightly acidic
highly basic
slightly basic
120s - Q5
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic it is.
Hydrochloric acid (HCl), which is the main component of the stomach acid, has a pH of 1. Which of these phrases describes stomach acid/ hydrochloric acid?
slightly basic
slightly acidic
highly acidic
highly basic
120s - Q6
The pH scale shows whether a compound is acidic, basic, or neutral. Sodium chloride, which is table salt, is neutral. Neutral compounds are neither acidic nor basic. From the scale, what is the pH of sodium chloride?
10
7
14
0
120s - Q7
Put all of the below household items in order from lowest to highest pH: Vinegar - Ammonia - Pure water.
Pure water - Vinegar - Ammonia
Vinegar - Pure water - Ammonia
Vinegar - Ammonia - Pure water
Ammonia - Pure water - Vinegar
120s - Q8
Where would you place baking soda (pH = 9.5) in the diagram?
It cannot be placed
In the Bases Circle
In the Acids Circle
In the Middle (overlapping part)
120s - Q9
Where would you place coke (pH = 4) in the diagram?
In the Middle (overlapping part)
It cannot be placed
In the Acids Circle
In the Bases Circle
120s - Q10
Sulfuric acid is a highly corrosive chemical that conducts electricity. It is very dangerous to the touch. What is the likely pH of sulfuric acid?
between 5 and 7
above 11
around 7
below 2
120s - Q11
Oven cleaner is a highly caustic chemical that reacts with baked on foods. It is dangerous to the touch and has a very slippery feel. What is the likely pH of oven cleaner?
above 10
around 7
between 5 and 7
below 4
120s - Q12
A sample of liquid drain cleaner contains much more hydroxyl ions (OH-) than hydronium ions (H+). It is also a very strong substance. What is most likely be the pH of the liquid drain cleaner?
3
7
above 13
between 7.5 and 8
120s
