Acids and Bases

Front

What happens to red litmus paper when an acid is dissolved in water?

Back

It remains red; acids turn blue litmus paper red.

Front

What does the pH value of an acid represent?

Back

The concentration of positive ions in the solution.

Front

Which of the following is a base? (baking soda in water, orange juice, vinegar, lemonade)

Back

Baking soda in water.

Front

Do all bases have a sour taste?

Back

No, that statement is false.

Front

Which pH value represents a base? (2.1, 4.6, 6.8, 8.1)

Back

8.1 represents a base.

Front

What is an acid?

Back

A substance that donates protons (H+) in a solution.

Front

What is a base?

Back

A substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution.

Front

What is the pH scale?

Back

A scale that measures how acidic or basic a solution is, ranging from 0 to 14.

Front

What pH value is considered neutral?

Back

A pH value of 7 is considered neutral.

Front

What is the effect of acids on blue litmus paper?

Back

Acids turn blue litmus paper red.