Acids, Bases, and pH Quiz

What are the properties of acids?

• Acids have a sweet taste, turn red litmus paper blue, and react with metals to produce oxygen gas.

• Acids have a bitter taste, turn blue litmus paper red, and react with metals to produce carbon dioxide gas.

• Acids have no taste, do not affect litmus paper, and do not react with metals.

• Acids have a sour taste, turn blue litmus paper red, and react with metals to produce hydrogen gas.

Give an example of a common acid found in the kitchen.

• Hydrochloric acid

• Citric acid

• Sulfuric acid

• Vinegar

What are the properties of bases?

• No taste, dry feel, and ability to turn blue litmus paper yellow

• Sweet taste, slimy texture, and ability to turn red litmus paper green

• Bitter taste, slippery feel, and ability to turn red litmus paper blue

• Sour taste, rough texture, and ability to turn blue litmus paper red

Name a substance that is a common example of a base.

• Sodium hydroxide

• Vinegar

• Hydrochloric acid

• Bleach

What is the pH scale and what does it measure?

• The pH scale measures the color of a substance.

• The pH scale measures the weight of a substance.

• The pH scale measures the acidity or alkalinity of a substance.

• The pH scale measures the temperature of a substance.

What is the pH level of a neutral substance?

• 3

• 10

• 7

• 5

What are indicators and how are they used to test for acids and bases?

• Indicators are solid substances that do not change color in the presence of acids or bases

• Indicators are used to measure temperature in a solution

• Indicators are substances that change color in the presence of acids or bases. They are used to visually determine the pH of a solution.

• Indicators are only used for testing acids, not bases

Name a natural indicator that can be used to test for acids and bases.

• Glass of water

• Concrete

• Lemon juice

• Hydrangea flower

Give an example of a neutralization reaction.

• Nitric acid + Calcium hydroxide → Calcium nitrate + Water

• Sulfuric acid + Potassium hydroxide → Potassium sulfate + Water

• Acetic acid + Ammonia → Ammonium acetate + Water

• Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water