Flashcards
The Atom
Cards in this deck (8)
- 1What is Dalton's Atomic Theory?1. All matter is made of very small particles called atoms
2. All Atoms are indivisible and they cannot be broken down into simpler particles. - 2What are Cathode Rays?Beams of negatively charged particles called electrons which travel in straight lines from the cathode to the anode, are deflected by magnetic and electric fields, and have enough energy to cause a small object like a paddle wheel to move.
- 3What are the properties of Cathode Rays?1. They travel in a straight Line
2. They cause glass to fluoresce when they strike it
3. Possess enough energy to cause a paddle wheel to move - 4Who investigated Cathode Rays?William Crookes
- 5Who came up with the name the Electron?George Stoney
- 6Who first measured the charge on an electron?Robert Milikan
- 7Who discovered the neutron?James Chadwick
- 8What are Alpha Particles?They are positively charged and consist of groups of two neutrons and two protons stuck together.
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- chemistry Flashcards on The Atom, created by bardini daley on 12/05/2020.
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- bardini daley
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