Flashcards
Developing the model of the atom
Cards in this deck (5)
- 1what did John Dalton think about matter?that is was made up of tiny spheres (atoms) that could't be broken up, and that each element was made up of a different type of atom.
- 2what model did J.J. Thomson come up with? and why?Currant cake model. He discovered electrons that could be removed, suggesting that atoms were spheres of positive matter with tiny negative electrons dotted around.
- 3What experiment did Rutherford carry out to learn more about atoms?Fired a beam of alpha particles at a thin gold foil. Most went straight through, some wee deflected more than expected, and a few were deflected straight back unexpectedly.
- 4How did Rutherford's experiment change how viewed the atom?it proved that atoms were mostly just space, and that it had a tiny central nucleus containing most of the atoms mass, which was positively charged.
- 5What is shown in the modern nuclear model?a positively charged nucleus orbited by negative electrons on a fixed path, surrounded by empty space.
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- GCSE Physics (P5 Radioactive materials) Flashcards on Developing the model of the atom, created by lily bevan on 17/04/2018.
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