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GCSE CHEMISTRY
Hydrocarbons
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Cards (16)
What area of chemistry focuses on compounds that contain carbon?
Organic chemistry
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Why is carbon considered a useful element for making large compounds?
Because each carbon atom can form four
strong bonds
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What are hydrocarbons defined as?
Compounds formed from carbon and
hydrogen
only
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What is the name of the hydrocarbon with the formula C4H10?
Butane
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Why is butanol not considered a hydrocarbon?
Because it contains an
oxygen atom
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What is the simplest type of hydrocarbons called?
Alkanes
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What is the molecular formula for methane?
C1H4
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How many carbon atoms are in ethane?
Two
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What is the molecular formula for propane?
C3H8
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How do the number of carbon and hydrogen atoms change in alkanes?
They grow by one carbon and
two
hydrogens
each time
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What is a homologous series in organic chemistry?
A group of
organic compounds
with
similar properties
React in a similar way
Have a
general formula
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What is the general formula for alkanes?
CnH2n+2
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If an alkane has three carbon atoms, how many hydrogen atoms does it have?
Eight
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What is the molecular formula for octane, which has eight carbon atoms?
C8H18
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What does it mean for alkanes to be saturated compounds?
Every carbon atom has four single
covalent bonds
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What happens to the structure of propane if one of its single bonds is changed to a double bond?
It would no longer be classified as an
alkane
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