C2 common question flashcards.

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  • Created by: Basital
  • Created on: 06-03-17 18:52
Describe how metal conduct electricity (2)
- In a metal positive ions sit in a sea of free delocalised electrons. - these electrons can move freely, thus 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 'spare' electrons which float between the layers. This allows for electricity to be conducted. - the atoms are arranged in layers. - graphite is soft because the 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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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 the properties of an ionic compound (2)
- high melting and boiling points. - only conduct electricity when molten or disolved
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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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What is the difference in bonding between diamond and graphite. (3)
- both made from pure carbon. - diamond makes 4 carbon-carbon bonds. - Graphite makes 3 carbon-carbon bonds.
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Describe the structure in bonding in a thermosetting polymer (2)
- burn. - polymer chain held together by cross links
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Describe the bonding in a simple covalent compound. (3)
- weak intermolecular bonds. - that don't require that much energy to separate them. - so low boiling/melting point.
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What is the difference between ionic and covalent bonding? (4)
- ionic bonding is between a metal + non-metal. - ionic bonding is the transfer of electrons. - Covalent 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

Using an example describe the properties of a simple covalent compound (3)

Back

Preview of the front of card 5
View more cards

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