C2 revison

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  • Created by: Jaspalsk
  • Created on: 26-02-17 18:40
Describe how a metal conducts electricity (2)
-In a metal positive ions sit in a sea of delocalised electrons. -These electrons can move freely therefore conducting electricity
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Describe the structure of an alloy (3)
-Alloys are hard. -Different sized atoms lead to distorted layers. -These layers cannot slide
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Describe and explain the properties of graphite (4)
-Because graphite only makes 3 carbon-carbon bonds. -It has a spare electron which floats between the layers. This allows for electricity to be conducted. -The atoms are arranged in layers. -Graphite is soft because these layers can slide.
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Describe the structure and bonding in a thermosoftening polymer (2)
-Melt. -Polymer chains not held together
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Describe the bonding in an ionic compound (6)
-The metal loses x number of electrons. -And becomes a x positive ion. -The non-metal gain x number if electrons. -Becoming a x negative ions. -They now both have full outer shells. -Give formula of compound
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Using an example describe the properties of a simple covalent compound (3)
-Oxygen gas, water, carbon dioxide, methane, chlorine gas. -Low boiling/melting point. -Does not conduct electricity
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Describe properties of an ionic compound (2)
-High melting points and boiling points. -Only conduct electricity when melted or dissolved
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Describe the bonding in a giant covalent compound (3)
-Large structure. -Strong bonds. -No free ions.
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Describe the structure of a pure metal (3)
-Pure metals are soft. -The atoms are arranged in layers. -These layers can slide over each other.
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Whats the difference in bonding between diamond and graphite? (3)
-Both are made from pure carbon. -Diamond makes 4 carbon-carbon bonds. -Graphite makes 3 carbon-carbon bonds
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Describe the structure and bonding in a thermosetting polymer (2)
-Burn. -Polymer chain held together by crosslinks
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Describe the bonding in a simple covalent compound (3)
-Weak intermolecular bonds. -That don't require much energy to separate them. -So low boiling, and melting point.
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What is the difference between ionic and covalent bonding (4)
-ionic bonding is between a metal and a non-metal. -Ionic bonding is the transfer of electrons. -Covelent bonding is between two non-metals. -Covalent bonding is the sharing of electrons
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Other cards in this set

Card 2

Front

Describe the structure of an alloy (3)

Back

-Alloys are hard. -Different sized atoms lead to distorted layers. -These layers cannot slide

Card 3

Front

Describe and explain the properties of graphite (4)

Back

Preview of the front of card 3

Card 4

Front

Describe the structure and bonding in a thermosoftening polymer (2)

Back

Preview of the front of card 4

Card 5

Front

Describe the bonding in an ionic compound (6)

Back

Preview of the front of card 5
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