UNIT THREE: covalent compounds and separation techniques

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  • Created by: Phoebe
  • Created on: 01-03-13 14:57
What is the name for the three forms of carbon?
The three forms of carbon are known as allotropes.
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How many bonds does carbon form in diamond?
Carbon forms four bonds in diamond.
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How many bonds does carbon form in graphite?
Carbon forms three bonds in graphite.
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What type of bonding is seen in all forms of carbon?
Covalent bonding.
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How can carbon-graphite conduct electricity?
There are free electrons that can move
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What type of elements form a covalent bond?
Two non metals
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What properties does a simple molecular bond have?
Simple covalent compounds have low melting and boiling points
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What type of bonding is found in carbon - diamond?
Giant Covalent
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Which allotrope of carbon does not conduct electricity?
Diamond
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What is a use of graphite?
Lubricant
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How many bonds does oxygen form?
Two
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What is a covalent bond?
Shared pair of electrons
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Which electron shells are involved in a covalent bond?
Outermost shells
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What does immiscible mean?
The liquids do not dissolve
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What is an example of an immiscible mixture?
Oil and water
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What property allows mixtures to be separated by fractional distillation?
Boiling point
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Which is the equation for calculating an Rf value?
distance moved by the compound/distance moved by the solvent
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What substance liquefies at the lowest temperature?
Nitrogen
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What is the name of the process that separates air into the different gases?
Fractional Distillation
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What piece of equipment can be used to separate immiscible liquids?
Separating funnel
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Other cards in this set

Card 2

Front

Carbon forms four bonds in diamond.

Back

How many bonds does carbon form in diamond?

Card 3

Front

Carbon forms three bonds in graphite.

Back

Preview of the back of card 3

Card 4

Front

Covalent bonding.

Back

Preview of the back of card 4

Card 5

Front

There are free electrons that can move

Back

Preview of the back of card 5
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