pH Scale, Acids, and Bases

Front

What is the pH scale?

Back

The pH scale is a measure of how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is an acid?

Back

An acid is a substance that donates hydrogen ions (H+) in a solution, typically having a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts hydrogen ions (H+) or donates hydroxide ions (OH-) in a solution, typically having 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 happens to litmus paper in an acidic solution?

Back

In an acidic solution, blue litmus paper turns red.

Front

What happens to litmus paper in a basic solution?

Back

In a basic solution, red litmus paper turns blue.

Front

What is the role of hydroxide ions (OH-) in a solution?

Back

Hydroxide ions (OH-) are responsible for the basic properties of a solution.

Front

What is the role of hydrogen ions (H+) in a solution?

Back

Hydrogen ions (H+) are responsible for the acidic properties of a solution.

Front

What is an example of a strong acid?

Back

Hydrochloric acid (HCl) is an example of a strong acid.

Front

What is an example of a strong base?

Back

Sodium hydroxide (NaOH) is an example of a strong base.