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 ionisation energy decrease down group 2?
Regarding the first ionisation energies, why do the values shown on the graph go down from magnesium to aluminium and then rise again from aluminium to silicon
Explain why the first ionisation energy of phosphorous is different to that of sulfur
Explain the position and numbering system of elements on the periodic table.