Burning fuels

Question 1

Complete combustion

Answer 1

Occurs when there is plenty of oxygen. Hydrocarbon+oxygen=carbon dioxide + water+energy

Question 2

Oxidised

Answer 2

A gain of oxygen. During combustion both carbon and hydrogen atoms are oxidized.

Question 3

All fossil fuels contain…

Answer 3

sulfur.

Question 4

Sulfur dioxide

Answer 4

Formed when fossil fuels are burnt and sulfur reacts with oxygen. (S02) It is acidic gas and toxic.

Question 5

Sulfur can be…

Answer 5

removed from fuel by reacting it with calcium oxide or calcium hydroxide. Petrol and diesel are without sulfur.

Question 6

Incomplete combustion

Answer 6

When there is a lack of oxygen. Carbon monoxide is formed. (CO)

Question 7

Carbon monoxide is…

Answer 7

a toxic gas. It is colourless and odourless. The red blood cell carries it around the body instead of oxygen. (CO)

Question 8

Nitrogen oxides

Answer 8

High temperature inside a car engine allows the nitrogen and oxygen in the air to react. This is toxic, can trigger someone with asthma.

Question 9

What gases cause acid rain?

Answer 9

• sulfur oxide

- nitrogen oxides

Question 10

Particulates

Answer 10

Tiny solid particles containing soot (carbon) and unburnt fuels.

Question 11

Causes of particulates

Answer 11

It travels to the upper atmosphere and reflects sunrays back to the space causing global dimming. Scientists think it can cause cancer and affects lungs.