What was concluded about the structure of the atom as the result of the gold foil experiment? 1)a positively charged nucleus is surrounded by positively charged particles. 2) a positively charged nucleus is surrounded by mostly empty space. 3) a negatively charged nucleus is surrounded by positively charged particles. 4) a negatively charged nucleus is surrounded by mostly empty space.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.