Fuels Part 2 (anjali😋) Flashcards
What’s the poem to learn how many number of carbon atoms
Mouse elephant parrot but parrot hates hipo ouch
How many number of carbon atoms in ethane
2
How many number of carbon atoms in butane
4
How many number of carbon atoms in propane
3
What is a homologous series
A groups of compound with the same general formula and similar chemical properties
Hats alkanes genral formula
CnH2n+2
What’s the shortend structural formula for ethane
CH3Ch3
What’s the shortend structural formula for pentane
Ch3Ch2CH2CH2Ch3
What’s the molecular formula for Heptane
C7H16
What’s the molecular formula for methane
CH4
Name the first 8 alkanes
Methane ethane propane butane pentane hexane heptane octane
If an alkane has 25 carbons what wil the molecular formula be
C25H52
What’s is cracking
Cracking is the name given to the process that splits the long chain hydrocarbon into smaller more useful ones
What chemical equation is this C8H18 ——>C5H12 + C3H6
Cracking
If a hydrocarbon is described as unsaturated is it a Alkane if not what is it
No it’s an alkene
What do all Alkenes contain that alkanes don’t
A carbon to carbon double bond
Is the first member of the alkenes methene if not then what is
Ethene
How do you know if a hydrocarbon is unsaturated
If it decolourise bromine solution
What is the genral formula for the alkenes
CnH2n
Give me a shortend structural formula for propene
CH2=CHCH3
Explain what is ment by term unsaturated hydrocarbon
A molecule contains at least one C=C ( carbon to carbon double bond)
Give me a alkene full structural formula for Butene
H H H H
| | | |
C=C—C—C —H
| | |
H H H
What’s the most simple carbohydrate
Glucose
What is the chemical formula for Glucose
C6H12O6
What dose a carbohydrate contain
A compound which only had carbon hydrogen and oxygen in it
What’s the word equation for the combustion of glucose
Glucose + Oxygen —-> carbon dioxide+water
What’s the chemical equation for the combustion of glucose
C6H12O6—>CO2+H2O
What is sucrose chemical formula
C12H22O11
Is glucose soluble
Yes
Is sucrose soluble
Yes
Is starch soluble
No ( a bit)
Dose glucose react with iodine if so what’s the change
No
Dose startch react with iodine if so what’s the change
Yes brown to black
Dose sucrose react with iodine if so what’s the change
No
Explain how can you tell the difference between glucose sucrose and starch
Starch turns brown iodine into black
Glucose turns blue Benedict orange
Sucrose doesn’t change either
What’s the word equation for photosynthesis
Light
Carbon dioxide —————> Glucose+Oxgen
+water Chlorophyll
What’s the definition of condensation reaction
Joint together 2 molecules with the elimination of water
What’s a hydrolysis reaction
Hydrolysis: splitting a molecule into 2 smaller molecule by adding water
Can you explain why energy drinks use glucose rather than normal sugar ( sucrose)
Glucose CNA be instantly absorbed sucrose must be broken down ( digested)
Tell me/write a word equation for the fermentation of glucose to ethanol
Yeast
Sugar. ————>Alcohol + carbon dioxide
(Glucose) (Ethanol)
Why should he process of fermentation not be carried above 40*C
The enzymes in yeast get start to get denatured at 40C and fully destroyed at temperature 50C
What do the enzymes do in yeast
Catalyse/ make the process happen
How do companies increase alcohol over 10-15%
Distillation
When percentage of Alcohol can it get too before the enzymes in the yeast dies
10-15%
What dose the plants turn glucose into
A complex carbohydrate
An example of complex carbohydrates
Starch
What’s the enzyme in fermentation called
Zymase
Why do you use test tube 1 as a control in hydrolysis
Tube 1 to prove that the process of the enzyme amalyse in tube 2 breaks starch down into glucose
What dose the body use to convert starch into glucose during digestion
Enzymes and stomach acid
How do they separate water and ethanol in distillation ( give numbers too)
Boiling point as water boiling point is 100C and ethanol is 79C
Give me the other short more useful molecule/fill in blank
C15H32 ——> C5H10 + _______ + C6H12
C4H10
How is Distillation done
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
What is fermination
Fermentation is the name given to the chemical process in which Glucose is converted into ethanol
