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 ▸

What is the structure of benzene?


Describe and explain the electrical conductivity of lithium oxide, Li2O, and lithium in their solid and molten states.


How can you work out, using the changes in oxidation numbers, which compound out of KCl, KBr and KI has the greatest reducing power?


How do you calculate lattice enthaply?