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Flashcards in Fuels quizzes Deck (22):
1

Define crude oil

A mixture of different sized hydrocarbon molecules

2

Why can you separate the crude oil into individual molecules?

its a mixture

3

How is crude oil separated

fractional distillation

4

The shorter the molecules, the ... ... the hydrocarbon is

more flammable and less viscous

5

The most viscous the hydrocarbon, the ... ... it is 'tapped off'

lower down

6

what is produced in complete combustion of a hydrocarbon

CO2, water +energy

7

What is required for complete combustion and how can it be obtained

excess oxygen
gas heater works properly and room is well ventilated

8

what is produced in incomplete combustion of a hydrocarbon

CO2, water +energy + CARBON MONOXIDE

9

What needs to be considered when choosing the best fuel

Ease of ignition
Energy value
Ash and smoke (waste)
Storage and transport

10

Crude oil distillation order, GO

Give Pete No Killing Deeds For Ben
Gases
Petrol
Naptha
Kerosene
Diesel
Fuel oil
Bitumen

11

Sulfur dioxide disadvantages

Acid rain, sulfur dioxide+clouds= dilute sulfuric acid (acid rain)
Kills animals + plants
Damages limestone buildings

12

Prevention methods of sulfur dioxide

reduction of fossil fuel use
removed from fuels before burnt
limestone
catalytic converters

13

Waste sources

Sulfur, Petrol + diesel
Carbon monoxide, incomplete combustion
Carbon dioxide, fossil fuels

14

Carbon dioxide decreasing methods, GO

Iron Seeding, iron injected into upper ocean
Phytoplankton bloom and absorb CO2
Some are toxic though

Converting carbon dioxide int hydrocarbons, high pressure/ temp/ metal catalyst

15

Define biofuels

fuels made from living organisms

16

Biofuel examples

Biogas, decomposed living organism waste
Ethanol, fermented sugars (using yeast)

17

Biofuel advantages

renewable
Clean fuels
Cheap

18

Biofuel disadvantages

takes up crop space
lots of energy required for ethanol

19

Define fuel cells

Electrical cells that are supplied with fuel and oxygen
fuel+o2> energy> electricity+ water

20

fuel cells advantages

quicker process, fewer places for energy to be lost as heat or friction
Clean products

21

fuel cells disadvantages

Take up more space to store
Explosive
uses electricity

22

Define Cracking

breaking large molecules into smaller, more in demand ones using heat