C5.1-C5.6 Chemical changes - knowledge questions

What is a rock that is economical to extract metal from called?

What is the product in a metal and oxygen reaction?

• metal sulphide

• metal oxide

• metal

• oxygen

What type of reaction is characterised by the addition of oxygen or the loss of electrons?

• reduction

• redaction

• oxidising

• oxidation

What type of reaction is characterised by the removal of oxygen or the gain of electrons?

• reduction

• redaction

• oxidising

• oxidation

What ions do metals form?

• neutral

• negative

• positive

What type of reaction occurs when a more reactive metal reacts with a less reactive metal compound

• reduction

• oxidation

• displacement

• disappointing

What are the products in a reaction between a metal and water?

• Metal oxide

• Metal hydroxide

• Hydrogen

• Oxygen

What element is used to extract less reactive metals, such as iron?

• hydrogen

• carbon

• nitrogen

• oxygen

What gas is formed when carbon is used to extract metals?

• hydrogen

• carbon monoxide

• carbon dioxide

• hydrogen dioxide

What salt is formed when a metal reacts with hydrochloric acid?

• Metal chloride

• Metal sulfide

• Metal nitrate

• Metal sulfate

• Metal chlorate