Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Bethany - Chemistry > Test 2 > Flashcards

Test 2 Flashcards

1
Q

What are fossil fuels mixtures of ?

A

Hydrocarbons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the simplest of the hydrocarbon families ?

A

Alkanes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the general formula of Alkanes ?

A

CnH2n+2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Name the Alkanes in order

A 
Methane 
Ethane
Propane
Butane
Pentane
Hexane
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the formula of Methane ?

A

CH4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the formula of Ethane ?

A

C2H6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the formula of propane ?

A

C3H8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the formula of butane ?

A

C4H10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the formula of pentane ?

A

C5H12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the formula of Hexane ?

A

C6H14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the prefix we use to remember the order of Alkanes ?

A

Monkeys Eat Peanuts But Prefer Hotdogs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Combustion =

A

Burning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When we combust something, what do we do so in ?

A

Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do we form when we combust something ?

A

Oxides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the word equation for complete combustion ?

A

Hydrocarbon + oxygen –> water + carbon dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens if the oxygen supply is limited during complete combustion ?

A

Then incomplete combustion may occurs and the toxic carbon monoxide may form.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What do all Alkenes contain ?

A

At least one carbon to carbon double bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the first Alkene called and how many carbon atoms does it have ?

A

Ethene - 2 carbon atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Name the Alkenes in order

A 
Ethene
Propene
Butene
Pentene
Hexene
Heptene
Octene
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the formula of Ethene ?

A

C2H4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the formula of Propene ?

A

C3H6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the formula of Butene ?

A

C4H8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the formula of Pentene ?

A

C5H10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the formula of Hexene ?

A

C6H12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is the formula of Heptene ?
C7H14
26
What is the formula of Octene ?
C8H16
27
What is the general formula for Alkenes ?
CnH2n
28
Are Alkanes saturated or unsaturated ? And why ?
Alkanes are saturated as the contain only carbon to carbon single bonds.
29
What is meant by unsaturated hydrocarbons ?
Unsaturated hydrocarbons are hydrocarbons that have carbon to carbon double or triple bonds.
30
Are Alkenes saturated or unsaturated ? And why ?
Alkenes are unsaturated as the contain at least one carbon to carbon double bond.
31
How can we distinguish between Alkenes and Alkanes ?
Using bromine solution
32
What will unsaturated compounds do to the bromine solution ?
Unsaturated compounds will rapidly decolourise bromine solution
33
What is the test for saturation ?
Unsaturated compounds will rapidly decolourise bromine solution.
34
What is complete combustion?
In a plentiful supply of oxygen, hydrocarbons burn it to produce carbon dioxide and water.
35
What is incomplete combustion?
In an oxygen deficient atmosphere, not all of the carbon will fully react during combustion. As a result, carbon and carbon monoxide can be produced when burning a hydrocarbon.
36
Name a poisonous gas
Carbon monoxide
37
What is a homologous series ?
A family of compounds with the same general formula and similar chemical properties
38
What type of molecules are alkanes ?
Covalent molecules
39
What is special about one of the covalent bonds within the Alkenes ?
The two covalent bonds within the alkene are not the same, one is easier to break than the other.
40
What part of the alkene is the reactive part ?
The carbon to carbon double bond
41
What do alkanes undergo ?
Addition reactions
42
what is the general formula for alcohol ?
CnH2n+1OH
43
What is the word equation for fermentation ?
(Yeast) | Glucose --> Ethanol + Carbon Dioxide
44
What is fermentation?
Fermentation is the breakdown of glucose to form alcohol and carbon dioxide.
45
What alcohol can fermentation be used on ?
Ethanol
46
What is special about methanol?
Methanol cannot be formed by either fermentation or addition into an alkene (there is no methene). As a result, and more complex chemical process must be used to make methanol.
47
What type of fuels are alcohols ?
Excellent 'clean' fuels
48
What is the word equation for photosynthesis ?
Carbon dioxide + water --> glucose + oxygen
49
What does we mean by unsaturated ?
Things can be added on
50
What is the test for an alkene/ unsaturatiom ?
Bromine water, if it is an Alkene, the yellowy bromine solution will turn colourless
51
What are Polymers ?
Man made, synthetic materials
52
How are polymers made ?
Polymers are made by joining alkene molecules together to form a long chain
53
What is a hydrocarbon ?
A substance which contains hydrogen and carbon only
54
'In the lab' how can an alcohol be formed ?
By an addition reaction with an Alkene
55
What can alcohols be used as because they burn/combust ?
Fuel
56
What are some alcohols more sufficient than ?
Petrol
57
Name a reaction in which alcohols can be produced ?
A fermentation reaction
58
Is alcohol a drug ?
Yes
59
What can small amounts of alcohol in the blood stream do ?
Suppress the nerves which control muscles
60
What can alcohol cause damage to ?
Liver, kidneys etc.
61
What are carbohydrates ?
Carbohydrates are a group of compounds containing carbon, hydrogen and oxygen
62
What are the simplest carbohydrates ?
Sugars (eg. Glucose, fructose, maltose)
63
What is starch ?
Starch is a polymer of glucose
64
What is the test for starch ?
Put starch solution into a dimple tray, add a couple of drops of iodine. A positive test shows; turns dark/purple opaque from yellow clear
65
What are fuels ?
Fuels are substances that contain energy, stored and their chemical bonds. When burned (oxidised), the fuel releases some of the stored energy.
66
Name some fuels
Fossil fuels | Food
67
Under what conditions are fossil fuels formed ?
Millions of years High pressure Organic material
68
Are fossil fuels finite or infinite ?
Finite
69
What type of reaction do fossil fuels burn in ?
An exothermic reaction
70
What do oil and natural gases require to become useful ?
They require to be processed

Bethany - Chemistry (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions