Radioactive decay occurs when atoms of an unstable element... A. break down to form atoms of another element

B. become part of a fossil

C. Are exposed to chemical weathering

D. Join with atoms of another element

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa

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)