Year 8 Combustion

combustion flashcards - all you need to know

Complete combustion

Burning a fuel in oxygen to release carbon dioxide and water. This releases heat energy

Fuel

A material that releases energy when it burns

Exothermic

A reaction that releases heat

Oxidation

A reaction that involves addition of oxygen to a chemical

Incomplete combustion

A reaction where fuel burns but with not enough oxygen.

Soot

Carbon that has not reacted with oxygen in incomplete combustion

Hydrocarbons

contain only carbon and hydrogen

Limewater

Turns cloudy when carbon dioxide is passed through it

Cobalt chloride paper

Turns from blue to pink in presence of water

Law of Conservation of Mass

Matter is not created nor destroyed in any chemical or physical change

Phlogiston

A substance that scientists once thought explained why things burn; it has since been proved that it does not exist.

Oxide

a compound of oxygen with another element or group.

Fire triangle

fuel

acid rain

rain containing nitric and sulfuric acids

greenhouse effect

the trapping of the sun's warmth in the atmosphere due to the presence of greenhouse gases

Global warming

increase in the average temperatures on Earth due to increased greenhouse gases

Accurate

Close to the true value

Reliable

Repeated to give similar results

Valid

All variables have been controlled