Chemistry

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  • Created by: Alex S-D
  • Created on: 23-03-14 20:05
Why do ionic compounds have high m.p and b.p
Because of the strong electrostatic forces between them, it takes a great deal of energy to seperate the positive and negative ions in a lattice .this means they have high melting points and boling point.
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Why do substances with simple molecular structures have low m.p and b.p?
This is because the weak intermolecular forces break down easily.
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Why dont covalent structure conduct electricity?
Because covalent compounds have no free electrons and no ions so they dont conduct electricity.
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Why do metals have high m.p and b.p?
The particles in a metal are held together by metallic bonds and metallic bonds are strong and a lot of energy is neede to break them
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Why are metals malleable?
Metals are malleable because they consist of layers of atoms. These layers can slide over one another when the metal is bent , hamperred or pressed.
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Why do metals conduct electricity?
Metals contain electrons that are free to move in the metal structure , carrying charge from place to place and allowing metals to conduct electricity well.
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Other cards in this set

Card 2

Front

Why do substances with simple molecular structures have low m.p and b.p?

Back

This is because the weak intermolecular forces break down easily.

Card 3

Front

Why dont covalent structure conduct electricity?

Back

Preview of the front of card 3

Card 4

Front

Why do metals have high m.p and b.p?

Back

Preview of the front of card 4

Card 5

Front

Why are metals malleable?

Back

Preview of the front of card 5
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