Definition
An acid is a substance that produces H⁺ ions in aqueous solution.
Properties of Acids
Sour in taste
Turn blue litmus → red
pH less than 7
Conduct electricity in aqueous solution
React with metals to release hydrogen gas
Examples of Acids
Hydrochloric acid (HCl)
Sulphuric acid (H₂SO₄)
Nitric acid (HNO₃)
Acetic acid (CH₃COOH)
