What does this diagram represent?

(A) A neutral oxygen atom
(B) An oxygen atom with 7 protons
(C) An oxygen ion with a +2 charge
(D) An oxygen ion with a -2 charge

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.