pH Scale

Front

What is the pH scale?

Back

The pH scale is a numerical scale ranging from 0 to 14 that measures the acidity or alkalinity of a substance.

Front

What does a pH less than 7 indicate?

Back

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

Front

What does a pH of 7 indicate?

Back

A pH of 7 indicates that a substance is neutral, like pure water.

Front

What does a pH greater than 7 indicate?

Back

A pH greater than 7 indicates that a substance is basic (alkaline).

Front

What are acids?

Back

Acids are substances that have a pH less than 7 and typically taste sour.

Front

What are bases?

Back

Bases are substances that have a pH greater than 7 and typically taste bitter.

Front

What is an example of a common acid?

Back

An example of a common acid is hydrochloric acid (HCl), found in stomach acid.

Front

What is an example of a common base?

Back

An example of a common base is sodium hydroxide (NaOH), found in drain cleaners.

Front

What is the significance of the pH scale in everyday life?

Back

The pH scale is important in various fields such as chemistry, biology, medicine, and environmental science, affecting processes like digestion and water quality.

Front

What is a neutralization reaction?

Back

A neutralization reaction occurs when an acid and a base react to form water and a salt, typically resulting in a pH closer to 7.