Therefore, students think of aqueous solution of acid bass look (a substance acid is a substance that has a sour best solution base is a substance with bitterness, FAT)
So they think that looks like the solution pH (acid is a chemical substance with a sour taste in alkaline solution is a substance that has a bitter, astringent).
So the students think the acid base look into how (concentrated acid is a substance with sour. The solution base is a substance with bitter, astringent,).