Chemical reactions a. occur only in living organisms c. only occur outside living organisms b. create and destroy atoms d. produce new substances 2. everyday equations describe a. thermonuclear reactions c. chemical reactions b. everyday processes d. biological chemistry 3. what does the symbol in a chemical equation mean

2.everyday equations describe -everyday processes                                                                                                                                                                    1.Chemical reactions-produce new substances.
3.what does the symbol in a chemical equation mean-that the reaction is reversible