| Basis | Acid | Base |
| Definition | An acid is any chemical compound once dissolved in water produces a solution with hydrogen ion activity more than purified water | A base is an aqueous substance that could absorb hydrogen ions |
| Strength | Relies on the concentration of the hydronium ions | Relies on the concentration of the hydroxide ions |
| Examples | Acetic acid CH3COOH and sulphuric acid | Sodium Hydroxide (NaOH) and Ammonia |
| Characteristics (Physical) | Would depend upon the temperature acids would look solid, liquid or in the form of gas. It would also have a sour taste. | Bases would feel slippery and solid in nature (except for ammonia, which is gaseous). It would have a bitter taste. |
| Disassociation | Acids would release hydrogen ions (h+) when mixed with water | Bases would release hydroxide ions(OH-) when mixed with water |
| Test with Litmus | Would turn litmus paper red | Would turn litmus paper blue |
