Which statement is true about endothermic and exothermic reactions? Kinetic energy is absorbed and converted to potential energy in an endothermic reaction.
Kinetic energy is absorbed and converted to potential energy in an exothermic reaction.
Energy is released in an endothermic reaction.
Energy is absorbed in an exothermic reaction.

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.