Acids:Sour in tasteReact with metals that possess a higher oxidation potential than hydrogenArrhenius: contribute a hydrogen ion to a solutionBrönsted-Lowery: contribute a proton (hydrogen ion or, under this definition, a hydronium ion when considering water) in a chemical reactionTurn blue litmus paper redpH lower than 7 (intuitively)Bases:
Bitter in tasteSoapy texture (bases react with the oils on your skin, yielding this effect)CausticArrhenius: donate a hydroxide ion to an aqueous solutionBrönsted: accept a proton in a chemical reactionpH greater than 7, pOH less than 7z