Acids, Bases, and pH Scale

Front

What is the pH scale used for?

Back

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

Front

What is considered a strong acid on the pH scale?

Back

A strong acid typically has a pH of 1 or lower.

Front

What does litmus paper indicate when testing a substance?

Back

Litmus paper indicates whether a substance is acidic or basic by changing color; red indicates acidity (pH < 7) and blue indicates basicity (pH > 7).

Front

What is an example of a common acid?

Back

Lemon juice is a common example of an acid.

Front

What happens when an acid and a base are mixed together?

Back

When an acid and a base are mixed together, they neutralize each other, resulting in the formation of water and a salt.

Front

What is a base in terms of pH?

Back

A base is a substance with a pH greater than 7.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

The pH scale is inversely related to the hydrogen ion concentration; as the concentration of hydrogen ions increases, the pH decreases.

Front

What is a neutral substance on the pH scale?

Back

A neutral substance has a pH of 7, indicating it is neither acidic nor basic.

Front

What is the effect of dilution on the pH of an acid?

Back

Diluting an acid with water increases its pH, making it less acidic.

Front

What is the significance of a pH of 14?

Back

A pH of 14 indicates a strongly basic substance, with a very low concentration of hydrogen ions.