C1.4 Crude Oil and Fuel Flashcards Preview

GCSE Chemistry > C1.4 Crude Oil and Fuel > Flashcards

Flashcards in C1.4 Crude Oil and Fuel Deck (18):
1

What do we fractionally distillate crude oil?

crude oil is a mixture of substances

2

Are the hydrocarbons in crude oil alkanes or alkenes?

alkanes

3

What is the formula for the series of alkanes?

CnH2n+2

4

Are alkanes saturated?

yes

5

Are hydrocarbons flammable?

yes

6

Properties of a long chain of a hydrocarbon

high boiling point, low volatility, high viscosity, low flammability

7

Properties of a short chain of a hydrocarbon

low boiling point, high volatility, low viscocity and high flammability

8

hydrocarbon+oxygen=

water+carbon dioxide

9

what is global dimming?

soot and unburnt hydrocarbons travel to the upper atmosphere reflecting sunlight back into space

10

How is carbon monoxide formed?

not enough oxygen for complete combustion of a fuel.
then the carbon oxidises to form carbon monoxide

11

What is the health problem with carbon monoxide?

it affects the amount of oxygen that our blood can carry

12

what is a catalytic converter?

they are put in car exhausts to reduce carbon monoxide and nitrogen oxides produced by a car engine

13

carbon monoxide +nitrogen oxides

carbon dioxide +nitrogen (in a catalytic converter)

14

What are biofuels made out of?

plant and animals products

15

What is biodiesel made out of?

oils from plants

16

Advantages of biodiesel

less harmful to animals, burns cleanly, cheap, carbon neutral, produce other useful products

17

Disadvantages of biodiesel

use land for crops - famine, destruction of animal habitats, doesn't do well in cold or hot temps

18

What is another biofuel?

ethanol