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Cards In This Set
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What elements are used in ionic bonding?
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Metal and non-metal.
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How are ions formed?
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By the transfer of electrons.
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The element that loses is electrons is...
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...OXIDISED.
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Reduction is when...
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... the element gains electrons.
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What makes ionic bonds so strong?
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The 3-Dimensional lattice structure with strong electrostatic bonds between the ions.
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Oxidised atoms are called...
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...CATIONS.
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Anions are formed when...
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...the atom is reduced and gains electrons.
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Covalent bonding takes place between...
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...a non-metal and a non-metal.
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Why is colvalent bonding different to ionic bonding?
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Because pairs of electrons are shared, not transferred from one element to the other.
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How do you set out a visual diagram of the bond?
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Only including the outer shell the two elements overlap with the shared electrons in the intersection.
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Name 3 properties of ionic compounds:
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> High melting points
> Conduction
> Hard but brittle
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Name 2 properties of simple covalent compounds:
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> Low melting and boiling points
> Do not conduct electricity
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What 2 types of substances can covalent bonds occur?
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Elements and Compounds
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Why do the substances share electrons?
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In order to complete their outer shells.
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Why can metallic substances conduct electricity?
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Because there is a 'sea' of delocalised electrons around the lattice of positive ions.
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