Chemistry - Atoms, Calculation and Bonding
- Created by: lola
- Created on: 02-03-11 18:31
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- A pure element is made up of just one type of atom
- sub atomic means smaller than a atom
- atom means not cutable
- Thompson first discovered electrons. first subatomic to be discovered
- Proton = posoive charge, Neutron = No Charge, Electron = negative charge
- Atom is mostly empty space - because radioactive hardly bounce back
- Electron have a mass of almost 0. proton and neutron have almost same mass
- Atoms measured in atomic mass units
- Protons + neutrona = mass number
- Neutrons = mass number - protons
- Atoms have no overall charge and are neutral (equal number of prtons…
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