Hydrogen peroxide (H2O2) is a syrupy liquid with a relatively low vapor pressure and a normal

boiling point of 152.2 o C. Rationalize the

difference of these physical properties from those

of water

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)