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SCIENCE TEST!

to help with your tests

TermDefinition
Democritus believed the universe was made of small tiny bits of stuff. he called these tiny bits of stuff matter
matter anything that has mass and takes up space. matter is anything you can see smell, taste, see, and touch.
Lavoisier French chemist who showed how matter changes
Law of conservation of matter states that matter is not created or destroyed ----- it only changes form.
Dalton believed that matter made of atoms was to small to see each type of matter was made of the same type of atom.
JJ Thomson Used a cathode ray tube sealed on both ends with metal plates at each end
Anode Something that is positive used in a cathode ray tube
Cathode something that is negative used in a cathode ray tube
Electron negatively charged particles
Ernest Rutherford guy who used gold foil and bombarded it with alpha particles (he also discovered the nucleus)
Nucleus positively charged central part of an atom
Protons Positive charged Particle
James Chadwick discovered the Neutron
Neutron uncharged particle that isn't affected by electrical waves
Neils Bohr Found that electrons are arranged in energy levels
The electron cloud
Created by: ejenn31
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