Chemical Bonding
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11 Terms
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Elements
are substances made up of only one type of atoms
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Compounds
are substances made up of two or more types of atoms chemically bonded
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Atom
made up of protons and neutrons in the nucelus and electrons existing as a cloud around the nucleus
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electrons
organised into energy shells
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Period table
organise elements in an increasing atomic number or the number of protons
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columns
are called groups (down)
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rows
are called periods (verticals)
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Group 1
Alkali Metals
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Group 2
Earth Metals
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Group 17
Halogens
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Group 18
Noble Gasses
Note 
Flashcards (22)