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17 Cards in this Set
- Front
- Back
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Why is Ionic brittle |
Distortion causes repulsion between ions of like charge |
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Why is ionic had |
Atoms strongly bound in lattice |
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Why do ionic have high MP/BP |
Strong ionic bonding extended through the lattice |
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Why are ionic conductive either molten or in aqueous solution |
Ions free to move |
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Ionic substances Non- conductors of electricity when solid |
Ions firmly bound in crystal lattice so no mobile charge particles |
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Why are metallic good conductors of heat and electricity |
Deloclised electrons transfer charge and thermal energy |
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Metallic high MP/BP |
Strong metallic bonding throughout lattice |
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Why are metallic dense |
Ions tightly packed in lattice |
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Why are mattalic ductile and maleable |
Distortion does not disrupt metallic bonding |
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Why are metallic Lustours |
delocalised electrons cause reflection of light |
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Why are covalent molecular no-counducter of electricity when solid, or dissolved with water, unless a reaction occurs to produce ions |
The molecules are unchanged and electrons are localised in covalent bonds or on the atoms |
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Why do covalent molecular bonds have low melting point / BP |
Week forces between molecules |
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Why r covalent molecular soft solids, liquids or gas |
Week forces between molecules
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Why are covalent networks non-counuctors when solid or molten |
Electrons localised in covalent bonds of atoms |
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Why r c networks have very high MP |
Strong covalent bonding extendig throughout the lattice |
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Why r C networks hard |
ions strongly bound in the lattice |
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Why r c networks brittle |
Distortion breaks covalent bonds |
