pH Practice

Front

What is pH?

Back

pH is a scale used to measure the acidity or basicity of a solution, ranging from 0 (most acidic) to 14 (most basic), with 7 being neutral.

Front

What does a pH less than 7 indicate?

Back

A pH less than 7 indicates that a solution is acidic.

Front

What does a pH greater than 7 indicate?

Back

A pH greater than 7 indicates that a solution is basic.

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, meaning it is neither acidic nor basic.

Front

What is the pH of lemon juice?

Back

The pH of lemon juice is typically around 2, making it quite acidic.

Front

What is the pH of ammonia?

Back

The pH of ammonia is typically around 11, indicating it is a basic substance.

Front

What is the role of litmus paper in pH testing?

Back

Litmus paper is used to determine whether a solution is acidic or basic; it turns red in acidic solutions and blue in basic solutions.

Front

What is an example of a common household acid?

Back

An example of a common household acid is vinegar, which has a pH of around 2-3.