8e combustion test

A hydrocarbon is made only of

• carbon

• hydrogen

• water

• carbon and hydrogen

1. Which type of fire extinguisher should be used on a fire involving flammable liquids such as grease or oil?

• Water

• Carbon Dioxide

• Foam

• Dry chemical

Which is NOT combustible substance

• Stone

• Water

• Paper

• Plastic

Combustion is

• Endothermic

• Exothermic

• Entraheat

• Extraheat

During combustion a fuel reacts with oxygen. This is called a ______________ reaction

• Heat

• Cold

• Combuxation

• Oxidation

Complete the fire triangle:- Heat, oxygen and ...

• Water

• Carbon dioxide

• Food

• Fuel

Acid rain is rain water that is made more acidic by dissolved

• sulfur dioxide

• nitrogen oxides

• sulfur dioxide and nitrogen oxides

• neither

Complete combustion produces

• Water

• Carbon dioxide

• Carbon monoxide

• Water and carbon dioxide

In a chemical reaction new substances are made but the mass of the reactants is always the

• less than the mass of the products

• same as the mass of the products

• more than the mass of the products

• double the mass of the products

The test for carbon dioxide uses

• water

• smoke

• white copper sulphate

• lime water