Chapter 4

Question 0

Disagreed with Democritus because he didn’t believe empty space could exist

Answer 0

Aristotle

Question 1

First person to propose the idea that matter was not infinitely divisible, but made up of individual particles called atoms

Answer 1

Democritus

Question 2

Theory that easily explained conservation of mass in a reaction as the result of the combination, separation, or rearrangement of atoms

Answer 2

Daltons atomic theory

Question 3

Cathode Rays are a stream of particles carrying a ___ charge

Answer 3

Negative

Question 4

Measured the affects of both magnetic and electric fields on the cathode ray to determine the charge to mass ratio of a charged particle, then compared it to known values

Answer 4

JJ Thomson

Question 5

Used oil drop apparatus to determine the charge of an electron

Answer 5

Robert Millikan

Question 6

Studied how positively charged alpha particles interacted with solid matter, gold foil

Answer 6

Ernest Rutherford

Question 7

Atoms with the same number of protons but diff neutrons

Answer 7

Isotope