How is pH important during digestion? a. Digestion needs a constant pH to take place. b. Different foods have different pH values. c. Enzymes react best with acids. d. Different enzymes work best at different pH values.

Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?