CHEMISTRY 180 FIRST SEMESTER GENERAL CHEMISTRY FALL SEMESTER 2002SECTION 4479 QUIZ 2 WEDNESDAY, SEPTEMBER 11, 2002 (09/11/02)ANSWER KEYThe following quiz is 30 minutes in length. Each question is worth 10 points.MULTIPLE CHOICEANSWER KEY1.(10 points) J. J. Thomson’s experiments with cathode rays led to thediscovery thata.protons are not evenlydistributed throughout an atom.b.electrons have a negativecharge.c.electrons have a positivecharge.d.atoms are made of protons,neutrons, and electrons.e.protons are 1840 timesheavier than electrons.
2.(10 points) Rutherford’s experiment with alpha particles scattering by goldfoil established that