UC4 Extracting metals

Which of the metals below is highest in the reactivity series?

• Calcium

• Sodium

• Copper

• Zinc

The metals can be put in order of their reactivity, by observing their reaction with water. Which of the metals below will react quickly with cold water?

• Iron

• Magnesium

• Zinc

• Calcium

The metals can also be put in order by reacting them with an acid. When you do this you get the products:

• salt + hydrogen

• salt + water

• salt + water + carbon dioxide

• metal hydroxide + hydrogen

When zinc sulphate and magnesium react the products will be: ​ (a)   ​ and​ (b)   ​ (c)  

• zinc
• magnesium
• sulphate
• hydrogen
• salt
• water
• carbon
• dioxide

The reaction Ca + ZnSO4 --> Zn + CaSO4 is what type of reaction?

• Neutralisation

• Decomposition

• Displacement

• Oxidation

If you add together silver metal and zinc chloride:

• They react and make silver chloride + zinc

• They react and make silver chloride + hydrogen

• They react and make silver zinc chloride

• They don't react

What would you see if you reacted together silver nitrate + copper metal?

• The metal would stay orange

• The metal would turn silver

• The solution would go from blue to colourless

• The solution would go from colourless to blue

A rock containing a high proportion of (an impure) metal is known as an ___

When extracting the following metals from their ores, which method would be best for extracting the following metals:

• Electrolysis

• Copper - from a low grade ore

• Heating with carbon

• Sodium

• Found native (no extraction needed)

• Zinc

• Phytomining

• Gold

Reorder the following steps of phytomining:

• Copper metal can be extracted from the ash

• Plant crops on the land

• The crops absorb copper ions as they grow

• Identify land which contains a low grade copper ore

• Burn the plants and collect the ash