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 ▸

How do buffers work?


Why do the atomic radii of the elements decrease across a period on the periodic table.


What is le Chatelier's principle?


What is the standard enthalpy change of formation and how does it differ from the standard enthalpy change of reaction?