IGCSE Metal extraction

Ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile . . .

• recycling the element

• extracting the metal

• to set up a mine

• to use the metal

Which of these elements is likely to be found in its natural state?

• iron

• sodium

• aluminium

• silver

What is the removal of oxygen from a substance called?

• reduction
• extraction
• electrolysis
• oxidation

What is the addition of oxygen to a substance called?

• decomposition
• reduction
• oxidation
• extraction

What is oxidation?

• loss of oxygen
• gain of electrons
• gain of hydrogen
• loss of electrons

Which element cannot be extracted from its ore by reduction with carbon?

• iron

• magnesium

• copper

• lead

Which of these elements would you expect to see just below carbon in the metal reactivity series?

• lithium

• aluminium

• calcium

• zinc

What is the name of the process that uses electricity to separate the elements in a compound?

• reduction
• electrolysis
• extraction
• mining

How could you extract sodium from molten sodium chloride?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

How would you best extract iron from haematite (iron ore)?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5