the atom

who wrote the atomic theory

john dalton
summarise dalton's atomic theory
- >all matter is made up of very small particles called atoms
- >all atoms are indivisible
- >atoms cannot be created or destroyed
who discovered the electron?

william crookes
what are cathode rays?

streams of negatively charged particles called electrons
who named electrons?

george stoney
positive electrode

anode
what does thomson conclude about cathode rays?

since the cathod rays were attracted up towards the positive plate, they consisted of negatively charged particles
who did an oil drop exp?

robert millikan
what does the oil drop exp determine?

size of charge on electron
who discovered the nucleus

ernest rutherford
what is the plum pudding model?

sphere of positive charge with negative electrons embedded in it at random
who discovered the neutron?

james chadwick
who discovered the proton?

rutherford
what did william crookes investigate?

cathode rays in vacuum tubes

Author

murphyainec

112075

Card Set

the atom

Description

chapter 2

Updated

2011-10-25T18:52:22Z

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