J. J. Thomson’s experiments with cathode ray tubes led him to propose a refined atomic model. Using what you can recall from this unit, write one or two short paragraphs describing Thomson’s atomic model. If needed, search the Internet for descriptions of the model.

the cathode ray experiment showed that there were both positive and negative charges in the atom.  This led him to theorize that the charges MUST be spread out evenly throughout the atom.  Thus the plum-pudding model

Explanation:

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.