Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, 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, resulting in 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, resulting in 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 pH when an acid is added to water?

Back

The pH decreases, indicating an increase in hydrogen ion concentration.

Front

What happens to pH when a base is added to water?

Back

The pH increases, indicating a decrease in hydrogen ion concentration.

Front

What is a strong acid?

Back

A strong acid is one that completely ionizes in water, producing a high concentration of H+ ions.

Front

What is a weak acid?

Back

A weak acid partially ionizes in water, resulting in a lower concentration of H+ ions compared to strong acids.

Front

What is the relationship between pH and H+ concentration?

Back

As the concentration of H+ ions increases, the pH decreases, and vice versa.

Front

What is the conjugate base of an acid?

Back

The conjugate base is the species that remains after an acid donates a proton (H+).