Acid and Base Concepts

What are the properties of acids?

• Acids accept protons

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

• Acids have a sweet taste

• Acids turn red litmus paper blue

Give an example of a common acid found in everyday life.

• Hydrochloric acid

• Sulfuric acid

• Acetic acid

• Citric acid

How do acids taste?

• Sour

• Salty

• Sweet

• Bitter

What are the properties of bases?

• Bases donate protons, have a sweet taste, feel rough, turn blue litmus paper red, and have a pH less than 7.

• Bases absorb protons, have a sour taste, feel slimy, turn blue litmus paper yellow, and have a pH of 0.

• Bases repel protons, have no taste, feel sticky, do not affect litmus paper, and have a pH of 7.

• Bases accept protons or donate pairs of electrons, have a bitter taste, feel slippery, turn red litmus paper blue, and have a pH greater than 7.

Provide an example of a common base.

• 7

• 5

• 2

• 3

How do bases feel to the touch?

• Warm

• Soft

• Slippery or soapy

• Rough

What is the pH scale used for?

• Measuring the temperature of a solution

• Determining the color of a solution

• Calculating the volume of a solution

• Measuring the acidity or basicity of a solution.

What range of values does the pH scale typically span?

• 1 to 15

• 5 to 20

• 0 to 14

• 10 to 25

What does a pH of 7 indicate?

• Acidic

• Basic

• Neutral

• Alkaline

Explain what happens during a neutralization reaction.

• An acid reacts with a base to form only water.

• An acid reacts with a base to form water and a salt.

• A base reacts with a base to form water and a salt.

• An acid reacts with an acid to form water and a salt.