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S3 Chemistry > Fuels Part 2 (anjali😋) > Flashcards

Fuels Part 2 (anjali😋) Flashcards

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1
Q

What’s the poem to learn how many number of carbon atoms

A

Mouse elephant parrot but parrot hates hipo ouch

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2
Q

How many number of carbon atoms in ethane

A

2

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3
Q

How many number of carbon atoms in butane

A

4

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4
Q

How many number of carbon atoms in propane

A

3

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5
Q

What is a homologous series

A

A groups of compound with the same general formula and similar chemical properties

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6
Q

Hats alkanes genral formula

A

CnH2n+2

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7
Q

What’s the shortend structural formula for ethane

A

CH3Ch3

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8
Q

What’s the shortend structural formula for pentane

A

Ch3Ch2CH2CH2Ch3

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9
Q

What’s the molecular formula for Heptane

A

C7H16

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10
Q

What’s the molecular formula for methane

A

CH4

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11
Q

Name the first 8 alkanes

A

Methane ethane propane butane pentane hexane heptane octane

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12
Q

If an alkane has 25 carbons what wil the molecular formula be

A

C25H52

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13
Q

What’s is cracking

A

Cracking is the name given to the process that splits the long chain hydrocarbon into smaller more useful ones

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14
Q

What chemical equation is this C8H18 ——>C5H12 + C3H6

A

Cracking

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15
Q

If a hydrocarbon is described as unsaturated is it a Alkane if not what is it

A

No it’s an alkene

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16
Q

What do all Alkenes contain that alkanes don’t

A

A carbon to carbon double bond

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17
Q

Is the first member of the alkenes methene if not then what is

A

Ethene

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18
Q

How do you know if a hydrocarbon is unsaturated

A

If it decolourise bromine solution

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19
Q

What is the genral formula for the alkenes

A

CnH2n

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20
Q

Give me a shortend structural formula for propene

A

CH2=CHCH3

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21
Q

Explain what is ment by term unsaturated hydrocarbon

A

A molecule contains at least one C=C ( carbon to carbon double bond)

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22
Q

Give me a alkene full structural formula for Butene

A

H H H H
| | | |
C=C—C—C —H
| | |
H H H

23
Q

What’s the most simple carbohydrate

A

Glucose

24
Q

What is the chemical formula for Glucose

A

C6H12O6

25
Q

What dose a carbohydrate contain

A

A compound which only had carbon hydrogen and oxygen in it

26
Q

What’s the word equation for the combustion of glucose

A

Glucose + Oxygen —-> carbon dioxide+water

27
Q

What’s the chemical equation for the combustion of glucose

A

C6H12O6—>CO2+H2O

28
Q

What is sucrose chemical formula

A

C12H22O11

29
Q

Is glucose soluble

A

Yes

30
Q

Is sucrose soluble

A

Yes

31
Q

Is starch soluble

A

No ( a bit)

32
Q

Dose glucose react with iodine if so what’s the change

A

No

33
Q

Dose startch react with iodine if so what’s the change

A

Yes brown to black

34
Q

Dose sucrose react with iodine if so what’s the change

A

No

35
Q

Explain how can you tell the difference between glucose sucrose and starch

A

Starch turns brown iodine into black
Glucose turns blue Benedict orange
Sucrose doesn’t change either

36
Q

What’s the word equation for photosynthesis

A

Light
Carbon dioxide —————> Glucose+Oxgen
+water Chlorophyll

37
Q

What’s the definition of condensation reaction

A

Joint together 2 molecules with the elimination of water

38
Q

What’s a hydrolysis reaction

A

Hydrolysis: splitting a molecule into 2 smaller molecule by adding water

39
Q

Can you explain why energy drinks use glucose rather than normal sugar ( sucrose)

A

Glucose CNA be instantly absorbed sucrose must be broken down ( digested)

40
Q

Tell me/write a word equation for the fermentation of glucose to ethanol

A

Yeast
Sugar. ————>Alcohol + carbon dioxide
(Glucose) (Ethanol)

41
Q

Why should he process of fermentation not be carried above 40*C

A

The enzymes in yeast get start to get denatured at 40C and fully destroyed at temperature 50C

42
Q

What do the enzymes do in yeast

A

Catalyse/ make the process happen

43
Q

How do companies increase alcohol over 10-15%

A

Distillation

44
Q

When percentage of Alcohol can it get too before the enzymes in the yeast dies

A

10-15%

45
Q

What dose the plants turn glucose into

A

A complex carbohydrate

46
Q

An example of complex carbohydrates

A

Starch

47
Q

What’s the enzyme in fermentation called

A

Zymase

48
Q

Why do you use test tube 1 as a control in hydrolysis

A

Tube 1 to prove that the process of the enzyme amalyse in tube 2 breaks starch down into glucose

49
Q

What dose the body use to convert starch into glucose during digestion

A

Enzymes and stomach acid

50
Q

How do they separate water and ethanol in distillation ( give numbers too)

A

Boiling point as water boiling point is 100C and ethanol is 79C

51
Q

Give me the other short more useful molecule/fill in blank

C15H32 ——> C5H10 + _______ + C6H12

A

C4H10

52
Q

How is Distillation done

A

Distillation seperates a mixture of alcohol and water by heating up the misture to between 79 degrees celcisu and 100 degrees celcius to allow for thr alcohol to seperate via evaporation

53
Q

What is fermination

A

Fermentation is the name given to the chemical process in which Glucose is converted into ethanol

S3 Chemistry (7 decks)

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