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12 Cards in this Set
- Front
- Back
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What are the 3 types of chemical bond? |
Ionic Covalent Metallic |
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How does ionic bonding work? |
Occurs between metals and non-metals e- are transferred from metals to non-metals + an - ions are formed |
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Why do ionic bonds have high melting and boiling points? |
Strong electrostatic forces between the oppositely charged ions that need a lot of energy to break |
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What are the properties of an ionic compound? |
Form a crystal structure called a Giant Ionic lattice High melting points Brittle and will shatter easily Soluble |
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How does covalent bonding work? |
Between 2 non metals Shared pair of e- |
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What is a molecule? |
A small group of covalently bonded atoms |
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Why is the boiling point of a covalent bond low? |
Weak intermolecular forces between the molecules |
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What are the properties of a molecular structure? |
Low melting and boiling point Can't conduct electricity Soft/brittle It is sometimes soluble |
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What are the properties of a macromolecular structure? |
Very high melting and boiling point Can only conduct electricity in graphite Diamond is very hard Graphite is brittle They are insoluble |
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How does dative covalent bonding work? |
Atom become electron deficient (+ charged) Atom donates lone pair to e- deficient atom |
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How does metallic bonding work? |
+ charged metal ions are attracted by the - charged e- Held together by electrostatic forces |
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What are the properties of a metallic structure? |
High melting and boiling point Can conduct electricity strong/malleable Insoluble |
