Iron is a transition metal true or false

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Why doesn't heat added to water make the tempature rise above 100c

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)