1 A) molecules B) compounds C) atoms D) elements 2 A) mixture B) metal C) element D) compound 3 A) J.J. Thomson B) John Dalton C) Ernest Rutherford D) Isaac Newton 4 A) electrode B) electron C) alpha particle D) foil 5 A) It could not be seen without a microscope. B) The negatively charged particles in the beam were attracted to the negatively charged cathode. C) Light is not made up of particles. D) He used a magnet to bend the beam, and light cannot be bent by a magnet. 6 A) These particles were attracted to the positively charged anode, and he knew that opposite charges attract each other. B) These particles were attracted to the negatively charged cathode, and he knew that like charges attract each other. C) The particles were spread evenly throughout the tube. D) Some of the particles went veering off at large angles to the tube. 7 A) electrons B) protons C) neutrons D) alpha particles 8 A) ball of raisin-cookie dough with raisins representing electrons B) solid ball the same throughout C) small ball within a large shell containing empty space D) electron cloud 9 A) proton B) nucleus C) neutron D) electron 10 A) He knew that positive charges existed within the atom because the cathode ray was attracted to a negatively charged surface. B) If atoms contained only negative charges, the particles in the cathode ray would not be attracted toward the anode. C) If atoms contained only electrons and empty space, then alpha particles should bounce right off of them and never pass through. D) If atoms contained only negative charges, all matter would be negatively charged, and it is not. 11 A) if Thomson's model of the atom was correct B) the speed at which alpha particles travel C) if Dalton's model of the atom was correct D) the size of the electron orbit 12 A) It flashed when hit by a charged particle and was used to track the motion of the alpha particles. B) It was the electrode and conducted the negative charges through the foil. C) It was the cathode and generated high-speed electrons. D) It was used to bend the stream of alpha particles. 13 A) in the outermost energy level B) spread evenly throughout C) moving in predictable orbits around the electrons D) in the center 14 A) proton B) neutron C) electron D) alpha 15 A) electron cloud B) solid ball the same throughout C) small ball within a large shell containing empty space D) ball of raisin-cookie dough with raisins representing electrons
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