Which of the following are physical properties of a penny? choose all that are correct.
select one or more: a. slightly red in color. b. conducts electricity very well. c. reacts to oxygen when heated. d. resists corrosion from most acids.

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?