The particles in both gases and liquids select one: a. consist only of atoms. b. can change positions with other particles. c. vibrate in fixed positions. d. are packed closely together.

Easy definition for atom and atomic mass

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

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)