Acids and Bases - Section 5.1 Quiz

Which of the following common kitchen items is classified as being an acid?
1. Lemon juice
2. Dish soap
3. Baking soda
4. Eggs
In a test of pH levels, a glass of milk was found to have a pH of 6.0. A glass of grape juice had a pH of 3.0.

What is the relationship between the pH levels of the milk and grape juice?
1. The grape juice is 1000 times more acidic than the milk
2. The grape juice is 3 times more acidic than the milk
3. The milk is 1000 times more acidic than the grape juice
4. The milk is 3 times more acidic than the grape juice
In describing acids and bases, acids are described as being “sour”, while bases are “bitter”.

If this is the case, why should chemicals never be tested by taste or smell?
1. Some acids and bases are very corrosive, and can burn your throat, stomach, nose, and skin on contact
2. Human taste is not accurate enough to distinguish between “sour” and “bitter”
3. Some bases are sour, and some acids are bitter
4. pH cannot be measured by smell
Below is a listing of some common items and their approximate pH values.

Which of the following items would turn blue litmus paper red?
1. Tomatoes
2. Pure water
3. Ammonia
4. Eggs
The following illustration lists some common acid-base indicators and their pH colour change.

What colour would phenolphthalein indicator be in a solution with a pH of 10?
1. Pink
2. Colourless
3. Blue
4. Yellow
The following illustration lists some common acid-base indicators and their pH colour change.

Tomato juice normally has a pH of about 4, which can cause indigestion in some people. By adding water, however, the juice becomes less acidic. Which indicator would best reveal when the pH would rise to 6?
1. Methyl red
2. Methyl orange
3. Bromothymol blue
4. Litmus
An unknown material must be identified in a chemistry lab. Several properties of the material were noted once it has been dissolved in water:
- The material conducted electricity.
- The material made a phenolphthalein solution appear colourless.
- The material would irritate human skin.
- The material had no effect on various metals tested.
Which of the following is the most accurate conclusion based on the results listed?
1. The unknown material is a weak base
2. The unknown material is a weak acid
3. The unknown material is a strong acid
4. The results are inconclusive
What is the name of the compound H₂CrO₄ when it is present in an aqueous solution?
1. Chromic acid
2. Hydrochromic acid
3. Chromeatic acid
4. Hydrogen chromate acid
What is the chemical formula of the compound H₂S?
1. Hydrosulphuric acid
2. Sulphuric acid
3. Hydrogen sulphur acid
4. Sulphurous acid
The illustration below shows the pH of a solution.

Which of the following statement would be true of this solution?
1. The solution would conduct electricity, would react with metals, and would contain H⁺ ions
2. The solution would not conduct electricity, would react with metals, and would contain H⁺ ions
3. The solution would conduct electricity, would not react with metals, and would contain H⁺ ions
4. The solution would conduct electricity, would react with metals, and would contain OH^– ions