The bonds in the compound mgso4 can be described as
a. ionic, only
b. covalent, only
c. both ionic and covalent
d. neither ionic nor covalent

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

The fact that the total amount of energy in a system remains constant is a(n)

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.