Acids , Bases and pH Flashcard

Front

What is an acid?

Back

An acid is a substance that donates hydrogen ions (H+) in an aqueous solution and has a pH of 0-6.9.

Front

What is a base?

Back

A base is a substance that accepts hydrogen ions (H+) or donates hydroxide ions (OH-) in an aqueous solution and has a pH of 7.1-14.0.

Front

What is pH?

Back

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

Front

What happens to litmus paper in an acidic solution?

Back

Litmus paper turns red in an acidic solution.

Front

What happens to litmus paper in a basic solution?

Back

Litmus paper turns blue in a basic solution.

Front

What is the pH range of neutral solutions?

Back

The pH range of neutral solutions is 7.

Front

What is the role of indicators in acid-base chemistry?

Back

Indicators are substances that change color in response to the pH of a solution, helping to identify whether it is acidic or basic.

Front

What is the chemical formula for hydrochloric acid?

Back

The chemical formula for hydrochloric acid is HCl.

Front

What is the chemical formula for sodium hydroxide?

Back

The chemical formula for sodium hydroxide is NaOH.

Front

What is the effect of acids on metals?

Back

Acids can react with metals to produce hydrogen gas and a salt.