What is the difference between an acid and a base?

An acid when dissolved in a liquid, will produce hydrogen ions (H+) while a base will produce hydroxide ions (OH-). When a litmus paper is used to test acids and bases, acids turn the litmus paper red while bases turn the litmus paper blue. On the pH scale (1-14), acids have pH less than 7 while bases have pH greater than seven.

LS

Related Chemistry A Level answers

All answers ▸

Why does the pH of neutral water drop when it is left out in an uncovered container on a worktop for a long period of time?


Explain how a coordinate bond forms


State and explain the trend in boiling points of chlorine, bromine, and iodine


Identify which 2 of the following processes involve an exothermic change: melting, boiling, freezing, deposition and sublimation