Acids & Bases

Front

What is an acid?

Back

An acid is a substance that produces H+ ions in water and has a sour taste. Acids can be corrosive and change litmus paper from blue to red.

Front

What is a base?

Back

A base is a substance that produces OH- ions in water, has a bitter taste, and feels slippery. Bases change litmus paper from red to blue.

Front

What is the pH scale?

Back

The pH scale is a measure of how acidic or basic a solution is, ranging from 0 to 14. A pH of 7 is neutral, below 7 is acidic, and above 7 is basic.

Front

What pH value indicates an acidic solution?

Back

A pH value below 7 indicates an acidic solution.

Front

What pH value indicates a basic solution?

Back

A pH value above 7 indicates a basic solution.

Front

What is the taste of acids?

Back

Acids typically have a sour taste.

Front

What is the taste of bases?

Back

Bases typically have a bitter taste.

Front

What happens to litmus paper when it comes in contact with an acid?

Back

Litmus paper turns from blue to red when it comes in contact with an acid.

Front

What happens to litmus paper when it comes in contact with a base?

Back

Litmus paper turns from red to blue when it comes in contact with a base.

Front

What is a common example of an acid?

Back

Common examples of acids include vinegar (acetic acid) and lemon juice (citric acid).