Organic chemistry quiz

Looking at the chemical formulae of these compounds, which is an alkane?
C3H8
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What is the name of the alkane which has the formula C4H10?
Butane
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Alkanes are saturated hydrocarbons. What does this mean?
All C atoms are bonded by single covalent bonds
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When hydrocarbons like the alkanes burn in plenty of air, what type of reaction takes place?
Complete combustion
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Which is a correct statement about incomplete combustion?
Poisonous carbon monoxide may be produced
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What is needed in order for chlorine to react with ethane in a substitution reaction?
Ultraviolet light
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Why are alkenes more reactive than alkanes?
The double bond can break open easily
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How do you test for an alkene?
They turn bromine water colourless
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Large alkane molecules can be cracked to produce more useful molecules.Give two conditions used to crack large alkane molecules.
Hight temperature and a catalyst
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What is the name of the reaction to produce ethanol from sugar?
Fermentation
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What is the name of the reaction to produce ethanol from ethene?
hydration
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A lot of the ethanol produced is used as a fuel for cars. What are two reasons why most of this ethanol is made from plants and not from crude oil?
Resources of crude oil are non-renewable and producing ethanol from plants uses less energy.
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A student made ethanol from sugar. What change is seen in the limewater?
Turns cloudy, because Carbon dioxide is produced
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What is crude oil?
Mixture
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What is the temperature gradient in a fractioning column?
Hot at the bottom and cooler as you go up
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The longer the hydrocarbons the...
Higher the boiling points
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What is Bitumen used for?
Roofing and road construction
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How was crude oil formed?
From the remains of dead plants and animals over millions of years ago
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What is cracking?
Splitting up long-chain hydrocarbons into short-chain hydrocarbons
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How can you test for the purity of a sample?
Measure its boiling or melting point
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What is steam cracking?
Heating hydrocarbons with a high temperature
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What is thermal decomposition?
Breaking molecules down by heating them
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What is the general equation for complete combustion?
Hydrocarbon+oxygen>carbon dioxide+water(+ energy)
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What is a homologus series?
A group of organic compounds which react in a similar way
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Are fossil fuels non-renewable or renewable fuels?
Non-renewable
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What is oxidation?
The gain of Oxygen
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Other cards in this set

Card 2

Front

What is the name of the alkane which has the formula C4H10?

Back

Butane

Card 3

Front

Alkanes are saturated hydrocarbons. What does this mean?

Back

Preview of the front of card 3

Card 4

Front

When hydrocarbons like the alkanes burn in plenty of air, what type of reaction takes place?

Back

Preview of the front of card 4

Card 5

Front

Which is a correct statement about incomplete combustion?

Back

Preview of the front of card 5
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