Big Three Quest Answers

 

  1. Democritus

 

  1. Tube with Maltese Cross à sum’n travels in straight lines (cast shadow)

Tube with magnet…bends à Not light

 

  1. Can’t answer on-line, but assume that a question like this will be on the test

 

  1. T: plum pudding model (imagine a picture here) R: Circle with little + nucleus and little – electrons. Difference = pudding v. no pudding and no nucleus v. nucleus.

 

  1. electron, plum pudding model, charge to mass ratio of electron

 

  1. Charge on electron and then (using Thomson’s number) mass of electron

 

  1. small: alpha particles usually missed. Heavy: alpha particles bounced back

 

  1. 17.3

 

  1. at # = 317, mass number = 768, charge = 7

 

  1. 318.6 amu