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P1-Matter
Contains all the stuff for P1
Term | Definition |
---|---|
Who invented the "Plum Pudding Model"? | JJ Thompson |
Describe the Plum Pudding Model | Negative electrons were spread through the positive "pudding" that made up the atom |
Who made the "Gold Foil" experiment? | Ernest Rutherford |
Describe the Gold Foil experiment | Fired positively charged alpha particles at an extremely thin sheet of gold, Nuclear atom was introduced |
Who thought atoms where in "Shells"? | Niels Bohr |
Describe the "Shells model" | Electrons can only exist in these shells. Each shell has a fixed energy. |
What is the formula for Density? | mass 3 volume unites= g/cm |