Science - C4 - Atomic Structure and Atomic Bonding 0.0 / 5 ? Applied ScienceC4 - Atomic Structure and Atomic Bonding GCSEOCR Created by: chlo-smallmanCreated on: 19-02-14 16:03 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. 1 of 6 Metals form POSITIVE ions as they LOSE electrons. Non-metals form NEGATIVE ions as they GAIN electrons. 2 of 6 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. 3 of 6 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. 4 of 6 NON-METALS combine by sharing electrons (Covalent Bonding) Carbon Dioxide and water are simple molecules with WEAK inter-molecular forces between the molecules. 5 of 6 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. 6 of 6
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