James Chadwick, like Ernest Rutherford, had to infer that neutrons were present in atoms. He made inferences based on observations of the behavior of atoms during experimental tests. Using evidence from Rutherford’s gold foil experiment, defend the following claim: Scientific knowledge is based on observation and inference.

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

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.

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2