1. Acids and bases are used in many of our daily activities. Some of them are used as food additives; some are for cleaning; and some are used as medicines. Now enumerate at least 2 substances in your kitchen and identify each of them as acid base and neutral. How important are these substances? Briefly discuss your answer.

1. Vinegar, Vinegar is a sour liquid that is made by fermenting substances that contain sugar, such as fruit or wine. It is used as a condiment to add flavor or as a preservative, as in pickling. Vinegar contributes acidic notes to foods, both in aroma and taste, (acid)

2. Baking soda, Baking soda, or sodium bicarbonate (NaHCO3) has a pH of 8.3, higher than distilled water's pH of 7.0. Baking soda makes biscuits rise, freshens drains and keeps teeth clean. Sodium bicarbonate is safe to touch. Mix a teaspoon of it into a cup of water and feel the slippery texture the water now has; that soapy feel is characteristic of bases. Drinking a few pinches of baking soda dissolved in water will neutralize some of the excess acid in the stomach. It also makes a mildly abrasive and non-toxic cleaning agent.

(base)

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