Friday, March 11, 2016
Acid and Alkalis
Acid is substance having a sour or sharp flavor and alkali is a substance having a slightly soapy flavor. A substance's degree of acidity is measured on the pH scale, acids have a pH of 0 - 7 and alkalis is a substance having a pH of 7 - 14. Most foods are somewhat acidic. Foods generally referred to as acids include citrus juices, vinegar and wines. A few alkalis are olives and baking soda.