Science - C4 - Atomic Structure and Atomic Bonding

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The NUCLEUS is made up of PROTONS and NEUTRONS.
ELECTRON has a charge of -1, PROTON has a charge of +1, the NEUTRON has a charge of 0.
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Metals form POSITIVE ions as they LOSE electrons.
Non-metals form NEGATIVE ions as they GAIN electrons.
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ISOTOPES - are elements that have atoms of the same atomic number but different mass numbers.
IONIC BONDING happens because of the transfer of electrons from METALS to NON METALS.
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Sodium chloride and magnesium oxide form GIANT IONIC LATTICES as their ions attract.
'dot and cross' models can be used to represent the ionic bonding in compounds.
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NON-METALS combine by sharing electrons (Covalent Bonding)
Carbon Dioxide and water are simple molecules with WEAK inter-molecular forces between the molecules.
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Due to the weak intermolecular forces - CARBON DIOXIDE and WATER have low melting points.
The period to which an element belongs is the same as the number of occupied electron shells.
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Other cards in this set

Card 2

Front

Metals form POSITIVE ions as they LOSE electrons.

Back

Non-metals form NEGATIVE ions as they GAIN electrons.

Card 3

Front

ISOTOPES - are elements that have atoms of the same atomic number but different mass numbers.

Back

Preview of the front of card 3

Card 4

Front

Sodium chloride and magnesium oxide form GIANT IONIC LATTICES as their ions attract.

Back

Preview of the front of card 4

Card 5

Front

NON-METALS combine by sharing electrons (Covalent Bonding)

Back

Preview of the front of card 5
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