You are asked to determine the identity of an unknown liquid and can measure only one physical property. you heat a liquid and record the liquid turns to vapor at 100 celsius: this demonstrates which physical property?

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Stage in which a star’s outer layers have started to cool and grow outward?