Combustion

Question 1

Hydrocarbon

Answer 1

A chemical substance which contains only hydrogen and carbon atoms chemically bonded together

Question 2

Hydrocarbon Examples

Answer 2

Methane and Octane

Question 3

Source of hydrocarbons

Answer 3

Hydrocarbons are organic compounds made up of two elements (carbon and hydrogen) only, hence their source name. The main source of hydrocarbons is crude oil. There are many hydrocarbons.

Question 4

Uses for hydrocarbons

Answer 4

Fuel, plastic, polyester and power generation

Question 5

Combustion

Answer 5

Combustion is a type of chemical reaction between fuel and an oxidant, where then the substance gets oxidised by burning. In other words, combustion reactions occur when oxygen reacts with another substance and gives off heat and light.

Question 6

Word equation for combustion

Answer 6

Hydrocarbon + oxygen ———> Carbon dioxide + water

Question 7

Test for water

Answer 7

When there is present in a copper sulphate sample the copper sulphate (usually white) turns blue instead. This shows that there is water present.

Question 8

Test for carbon dioxide

Answer 8

add a lint split to the gas inquisition and if that lit splint becomes extinguished, then we know there is carbon dioxide present
This is because the carbon dioxide displaces oxygen and therefore prevents combustion

Question 9

Combustion of a hydrocarbon products in oxygen

Answer 9

Carbon Dioxide and water