Chemistry-34 Extraction of metals

What is an ore?

• a solid metal
• a rock cantaining a metal combined with other elements
• an element
• an object used to row a boat

Tags

NGSS.MS-PS1-1

Which of these elements is unlikely to be found native?

• gold
• platinum
• aluminium
• silver

What is the removal of oxygen from a substance called?

• reduction
• extraction
• electrolysis
• oxidation

What is oxidation?

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

Tags

NGSS.HS-PS1-1

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

• iron
• aluminium
• copper
• lead

Which series is used to predict the reactions of metals with carbon and other elements?

• reactionary series
• reaction series
• redox series
• reactivity series

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

• reduction
• electrolysis
• extraction
• mining

Tags

NGSS.HS-PS2-5

How could you extract sodium from molten sodium chloride?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

Tags

NGSS.HS-PS2-5

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

• reduction by carbon
• electrolysis
• decomposition
• oxidation

which of these metals must be separated using electrolysis?

• potassium

• magnesium

• iron

• gold

• zinc