Question 1

Which of the following is a characteristic property of acids?

Accepted Answer

They taste sour.

Answer

They conduct electricity without water.

Answer

They are always solid at room temperature.

Answer

They feel slippery.

Question 2

What is the pH range of acidic solutions?

Accepted Answer

0 to 6

Answer

7 to 14

Answer

0 to 14

Answer

8 to 10

Question 3

Which of the following compounds is a base?

Accepted Answer

Sodium hydroxide (NaOH)

Answer

Hydrochloric acid (HCl)

Answer

Sulfuric acid (H2SO4)

Answer

Sodium chloride (NaCl)

Question 4

Which of the following describes a property of salts?

Accepted Answer

They are formed from the neutralization of acids and bases.

Answer

They taste sweet.

Answer

They always conduct electricity in a solid state.

Answer

They are always liquids at room temperature.

Question 5

What is a common property of bases?

Accepted Answer

They have a bitter taste.

Answer

They are always volatile.

Answer

They turn blue litmus paper red.

Answer

They produce hydrogen ions in solution.

Question 6

Which of the following is a characteristic of acids when dissolved in water?

Accepted Answer

They increase the concentration of hydrogen ions (H+).

Answer

They decrease the temperature of the solution.

Answer

They produce a film on the surface of the water.

Answer

They decrease the concentration of hydroxide ions (OH-).

Question 7

Which of the following is an example of a neutral compound?

Accepted Answer

Water (H2O)

Answer

Ammonia (NH3)

Answer

Sodium bicarbonate (NaHCO3)

Answer

Citric acid (C6H8O7)

Question 8

Which of the following statements about acids is true?

Accepted Answer

Acids can react with metals to produce hydrogen gas.

Answer

Acids feel slippery to the touch.

Answer

Acids are always solid at room temperature.

Answer

Acids turn green litmus paper red.

Question 9

What is the primary characteristic of a strong acid?

Accepted Answer

It dissociates completely in water.

Answer

It is always a gas at room temperature.

Answer

It feels slippery when touched.

Answer

It has a pH of 7.

Question 10

What type of compound is formed when an acid reacts with a base?

Accepted Answer

Salt

Answer

Alcohol

Answer

Water

Answer

Gas

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