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Chemistry > Combustion > Flashcards

Combustion Flashcards

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1
Q

What is a hydrocarbon?

A

A compound/molecule made up of only hydrogen and carbon

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2
Q

What is the chemical formula of methane?

A

CH4

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3
Q

What is the chemical formula of octane?

A

C8H18

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4
Q

What is the chemical formula of butane?

A

C4H10

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5
Q

What is the chemical formula of hexane?

A

C6H14

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6
Q

What is the chemical formula of propane?

A

C3H8

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7
Q

What is the chemical formula of ethane?

A

C2H6

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8
Q

What is a main source of hydrocarbons?

A

Crude oil

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9
Q

What is crude oil made up of?

A

A mixture of hydrocarbons and small amounts of other substances

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10
Q

What is butane used for?

A

Used as a fuel for cigarette lighters and portable stoves

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11
Q

What is hexane used for?

A

Extracting edible oil for seeds and veg, also a cleaning agent

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12
Q

What is propane used for?

A

Home and water heating, powering industrial equipment

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13
Q

What is methane used for?

A

Used as fuel to make heat and light

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14
Q

What is ethane used for?

A

Used to produce ethylene, which is used to produce plastic

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15
Q

What is combustion?

A

A type of chemical reaction using hydrocarbons and oxygen

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16
Q

What is needed for combustion?

A

Hydrocarbons and oxygen

17
Q

What is complete combustion?

A

When a hydrocarbon is combusted in a plentiful supply of oxygen

18
Q

What is the general word equation for combustion?

A

Hydrocarbon + oxygen –> Carbon dioxide + water

19
Q

How do you test for presence of carbon dioxide?

A

Bubble gas through limewater. If present, limewater turns cloudy

20
Q

How do you test for prescence of water?

A

Add anhydrous copper sulphate to substance. If present, turns blue

Chemistry (11 decks)

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