Question

5 what is the main idea of this text? a some cooks use the chemical reaction between vinegar and baking soda to help loosen and clean acidic foods that have burned onto a pot. b in chemistry, salt is a chemical compound that has equal amounts of positive and negative ions and no net electric charge. c combining vinegar and baking soda leads to an acid - base reaction and a decomposition reaction, two common and important kinds of chemical reactions. d acids taste sour, corrode metal, have a rough texture, and release hydrogen ions when dissolved in water.

Explanation:

The main idea of a text should summarize the overall content. Option A focuses on a specific use (cleaning pots) which is too narrow. Option B defines salt which may not be the main focus. Option D describes acids which is also a partial aspect. Option C comprehensively states the chemical reactions (acid - base and decomposition) that occur when combining vinegar and baking soda, which is likely the main idea if the text is about these reactions.

Answer:

C. Combining vinegar and baking soda leads to an acid - base reaction and a decomposition reaction, two common and important kinds of chemical reactions.