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?
Write down the equation for the Gibbs Free Energy change of a reaction. Hence explain why, for a spontaneous endothermic reaction, there must be an increase in the total entropy.
How do you describe the process of recrystallisation to purify a product?
What is the chemical structure of metal