9Fa Fb Fc quick quiz

Reaction in which a substance gains oxygen

• flammable

• hydrocarbon

• oxidation

A compound containing hydrogen and carbon only

• Flammable

• Oxidation

• Hydrocarbon

A ______________ substance catches fire easily

• Flammable

• Oxidation

• Hydrocarbon

A substance that provides oxygen to oxidise another substance.

• oxidising agent

• oxidation

• reducing agent

• reduction

A change or reaction that absorbs energy from the surroundings, making the temperature of the surroundings fall.

A theory used to explain the different properties and observations of solids, liquids and gases.

• The theory of relativity

• The particle theory of matter

• The Big Bang theory

• The matter rule

A change or reaction that transfers energy into the surroundings, making the temperature in the surroundings rise.

Which of the following is a chemical change?

• Evaporation

• Combustion

• Melting

• Condensation

Which of the following examples is a physical change

• Frying an egg

• Iron rusting

• Heating a candle until it turns into a liquid

• Burning coal

Complete the equation: metal + water => ________

• metal oxide

• salt + hydrogen

• metal hydroxide + oxygen

• metal hydroxide + hydrogen