A few days ago
Pam

Chemistry…?

Hello, i really need help with the question that i have to answer for my summer AP Chem. hw. if you please help me with it i will greatly appreciate it!

Summarize the evidence ussed by J.J THompson to argue that cathode rays consist of negatively charge particles. A negatively charged particle is cause to move between two electriacally charged plates. (a) Why does the path of the charged particle bend?(b) As the charge on the plates is increase, would you expect the bedning to increase, decrease, or stay the same? (c) As the mass of the particle is increase while the speed of the particles remains the same, would you expect the bending to increase, decrease or stay the same? (d) An unknown particle is sent through the apparatus. Its path is deflected in the opposite direction form the the negatively charged particle, and it is deflected by a smalled magnitude. What can you conclude about this unknown particle?

Thank you in advance! =]

Top 1 Answers
A few days ago
Anonymous

Favorite Answer

JJ Thompson did this through the Plum Pudding model, where he discovered the presence of those negatively charged particles (called electrons)…however Rutherford’s gold foil expierement proved to be acurate…….

Look at this: http://en.wikipedia.org/wiki/Plum_pudding_model

Hope that was a help

0