311The standard pH scale used to measure acidity and alkalinity generally ranges over what values?
312On the pH scale, a value of 7 is generally considered what?
313On the pH scale, values below 7 generally indicate a solution that is what?
314On the pH scale, values above 7 generally indicate a solution that is what?
315Litmus paper commonly turns which color when dipped into an acidic solution?
316Litmus paper commonly turns which color when dipped into a basic, or alkaline, solution?
317Which mild organic acid is primarily responsible for the sour taste of vinegar?
318Which acid is primarily responsible for the sour taste found in lemons and other citrus fruits?
319Which strong acid is naturally present in the human stomach to aid digestion?
320Which mild acid gives sour milk and yogurt their characteristic tangy taste?
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