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 is the first ionisation energy of barium larger than the first ionsiation energy of caesium?


What is the difference between exothermic and endothermic?


Define and give an example of Le Chatalier's Principle of Chemical Equilibrium.


Explain the structure and characteristics of benzene