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Element Encyclopedia
Just For Fun
The Atom
- Atoms contain three sub-atomic particles; Protons, Neutrons, and Electrons.
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- Neutrons and Protons make up the nucleus of the atom, while Electrons are on the outer orbital shells of the atom.
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Masses of the Sub-Atomic Particles...
- Mass of a proton = 1 amu
- Mass of a neutron = 1 amu
- Mass of an electron=0 or 1/1000 amu
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( amu stands for Atomic Mass Unit)
Charges of Sub-Atomic Particles...
- Charge of a proton = positive
- Charge of a neutron = neutral
- Charge of an electron = negative
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The mass number of an element is the total number of neutrons and protons added together.
The atomic number of an element is the number of protons the element has.
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CITATION:
Sharp, T. (2013, June 05). What is an Atom? Retrieved December 27, 2016, from http://www.livescience.com/37206-atom-definition.html
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BBC - GCSE Bitesize: Atoms and elements. (2014). Retrieved December 27, 2016, from http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/fundamentals/atomsrev1.shtml