Bellwork -

What is the name of the ore that contains aluminum

• Bauxite

• Cryolite

• Aluminum oxide

• Heamatite

Which is not a reason that cryolite is used in aluminum extraction?

• Cryolite dissolves aluminum oxide

• Cryolite reduces the melting point of aluminum oxide

• Cryolite decreases the cost of aluminum extraction

• Cryolite removes impurities from aluminum oxide

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

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 the addition of oxygen to a substance called?

• decomposition
• reduction
• oxidation
• extraction

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

What do you add to aluminium ore to reduce its melting temperature?

• Dendrite

• Malachite

• Bauxite

• Cryolite