Molecules + Metals / Alloys

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Created by: benkelly123
Created on: 06-10-18 17:41

Molecules?

Group of 2 / more atoms joined together by covalent bonds + made up of carbon

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Example?

CH 4 = 1 carbon atom + 4 hydrogen

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Simple molecules?

Strong covalent bonds + nothing new made so reversible

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Facts?

- Low M/B point - Little energy needed to break bonds - Cannot conduct electricity = no ions free electrons can move so can carry charge

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Allotropes?

Different forms of same element

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Diamond + Graphite Fact?

-Carbon atoms - Macromolecules

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Graphite?

- 3 covalent bonds -high melting point strong bonds to break - soft and slippery layers atoms slip of each other - Conduct electricity

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Diamond?

- 4 Covalent bonds - HIgh melting P. strong bonds to break - Very hard - Delocalised electrons

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Nanoscience?

Very small

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Nanotubes?

- 3 covalent bonds -made of tiny tubes which are carbon -Very strong - Excellent conductor electricity

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Graphene?

- Strong covalent bonds - Light weight/flexible - transparent

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Buckminsterfullene?

-60 carbon atoms - 3 covalent bonds - 1 electron free so fullene conduct electricity

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Metals + Alloys?

Alloy = mixture of two/more element when one is metal - Harder + stronger than pure element Metal= giant structure of atoms - Electrons on outer shell delocalised

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Other cards in this set

Card 2

Front

Example?

Back

CH 4 = 1 carbon atom + 4 hydrogen

Card 3

Front

Simple molecules?

Back

Card 4

Front

Facts?

Back

Card 5

Front

Allotropes?

Back

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Molecules + Metals / Alloys