8.1 Metal - Origins

Which of these is not a risk associated with a mining site?

• Deforestation
• loss of habitats
• disruption of local communities
• increase in flora and fauna,

Which of these is a property of metals?

• It's malleable
• It can't conduct electricity
• They are used in food
• It's very brittle

Which of the following is NOT a characteristic of most metals?

• Brittle
• Good conductor
• Ductile
• Malleable

Thermal conductivity is the ability of an element to transfer _______

• Heat
• Electricity 
• Power
• Force

The deterioration of a metal due to a chemical reaction in the environment is called this

• Reactivity
• Corrosion
• Luster
• Malleable

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

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

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

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

What method of extraction would be used to extract iron from iron ore?

• Electrolysis
• Heating with Charcoal
• Iron is a native metal

A form of steel containing chromium, resistant to tarnishing and rust.

• Stainless steel
• Abrasion resistant steel
• Carbon steel
• Metal

Stainless steel is magnetic.

• True
• False