Chemistry

HideShow resource information
  • Created by: percivalc
  • Created on: 14-05-15 16:10
What is a hydrocarbon?
A substence that is made up from hydrogen and carbon atoms only
1 of 31
What does boiling point depend on?
Size
2 of 31
What are the smallest hydrocarbons?
Gasses
3 of 31
What are hydrocarbons with 5-16 carbon atoms?
Liquids
4 of 31
What are larger hydrocarbons?
Solids
5 of 31
What is the first step in fractional distillation?
Crude oil is heated to evaporate it
6 of 31
Whats is the second step in fractional distillation?
Crude oil passes into a tower; the hottest at the bottom and the coolest at the top
7 of 31
Why is the hottest part of the oil at the bottom and the coolest at the top?
Because the different hydrocarbons have different boiling points so they condense at different positions in the coloumn
8 of 31
What are the 'traps' used for?
The traps collect the liqued and each fraction has a different use
9 of 31
How many traps are there?
7
10 of 31
What is trap 1 for?
Bitumen
11 of 31
What is trap 2 for?
Fuel oil
12 of 31
What is trap 3 for?
Lubricating oil
13 of 31
What is trap 4 for?
Diesel
14 of 31
What is trap 5 for?
Kerosene
15 of 31
What is trap 6 for?
Gasoline
16 of 31
What is trap 7 for?
Gases
17 of 31
What is the lowest temperature involved in fractional distillation?
70 degrees celcius
18 of 31
What us the highest temperature involved in fractional distillation?
360 degrees celcius
19 of 31
What is the equation for complete comubustion?
CH4 + (2)02 -> CO2 + (2)H2O
20 of 31
What is the equation for incomplete combustion?
CH4 + (1 1/2)02 -> CO + (2)H20
21 of 31
What are three alkanes?
Methane, ethane, propane
22 of 31
What are two alkenes?
Ethene, propene
23 of 31
What are Alkanes?
General formula = CnH2n+2, they are saturated, when mixed with bromine water there is no change
24 of 31
What are Alkenes?
General formula = CnH2n, they are unsaturated, when mixed with bromine water they become decolourised
25 of 31
How are hydrocarbons cracked into smaller molecules?
The hydrocarbons are heated and passed over a catalyst to break them down into smaller molecules
26 of 31
How is polyethene formed?
Polyethene is formed when ethene molucules join together to make a poymer
27 of 31
How are ethen molecules allowed to join togethor?
The double bonds between the two carbon atoms 'open up', allowing ethene molecules to join end to end
28 of 31
What is the charge on a Proton?
Positive = +1
29 of 31
What is the charge on a neutron?
Neutral = 0
30 of 31
What is the charge on an electron?
Negative = -1
31 of 31

Other cards in this set

Card 2

Front

What does boiling point depend on?

Back

Size

Card 3

Front

What are the smallest hydrocarbons?

Back

Preview of the front of card 3

Card 4

Front

What are hydrocarbons with 5-16 carbon atoms?

Back

Preview of the front of card 4

Card 5

Front

What are larger hydrocarbons?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Hydrocarbons resources »