Core: Atoms
- Created by: jross10
- Created on: 30-03-15 13:42
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- Atoms
- Structure of an atom
- Electrons
- move around the nucleus
- negative charge
- tiny compared to nucleus
- size of orbit determines size of atom
- virtually no mass
- occupy shells around nucleus
- Nucleus
- middle of the atom
- contains protons and neutrons
- overall positive charge
- protons are positive, neutrons have no charge
- almost whole mass of atom concentrated in the nucleus
- tiny compared to whole atom
- Electrons
- Number of protons = Number of electrons
- neutral atoms have no charge
- charge on electrons is the same size as the charge on protons but opposite
- number of neutrons isn't fixed but is about the same as the number on protons
- Particals
- Protons are heavy and positively charged
- relative mass = 1; relative charge = 1
- neutrons are heavy and neutral
- relative mass = 1; relative charge = 0
- electrons are tiny and negatively charged
- Untitled
- Protons are heavy and positively charged
- Structure of an atom
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