Iron

Which gas is produced as a waste product when iron is extracted from its ore in the blast furnace?

• Carbon dioxide
• Hydrogen
• Nitrogen
• Oxygen

In the blast furnace, limestone is added to...

• Create more heat
• Turn iron oxide into pure iron
• Remove acidic impurities

• A
• B
• C
• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Hot gases are released from the blast furnace at the...

• Bottom of the furnace
• Top of the furnace
• Middle of the furnace
• No hot gases are released

In the blast furnace, Hot air is added to the...

• Top of the furnace
• Middle of the furnace
• Bottom of the furnace

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

• reduction by carbon
• electrolysis
• decomposition
• oxidation

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 do metals conduct well?

• heat

• electricity

• circulation

• music

Tags

NGSS.HS-PS2-5

Why are alloys generally used to make everyday objects?

• Alloys are often stronger and less active than pure metals.
• Alloys have higher melting point than pure metals.
• Alloys are less expensive to produce than pure metals.
• Alloys have ionic bonds instead of metallic bonds.