C5 Unit 1 Minerals and Ores: Chemistry

What is a naturally occurring element or compound known as?

• Ore

• Mineral

• Metal

• Rock

Which mineral contains a high percentage of iron?

• Quartz

• Cinnabar

• Malachite

• Hematite

What is the name of the compound of calcium found in limestone?

• Calcium Oxide

• Calcium Chloride

• Calcium Carbonate

• Calcium Sulfide

What type of reaction occurs when a more reactive element displaces a less reactive element in a compound?

• Decomposition Reaction

• Single Displacement Reaction

• Double Displacement Reaction

• Combustion Reaction

What is the green solid that thermally decomposes to form copper (II) oxide and carbon dioxide upon heating?

• Copper Oxide

• Copper Carbonate

• Copper Sulfide

• Copper Chloride

What is used to extract copper metal from copper (II) oxide?

• Aluminum

• Sulfur

• Iron

• Charcoal (Carbon)

What must be done to prevent copper (II) oxide from reforming during the extraction process?

• Add more copper (II) oxide

• Cool the mixture

• Heat the mixture further

• Rinse with water while hot

Which form of carbon is used to extract iron from its ore?

• Charcoal

• Coal

• Graphite

• Diamond

Which metals are not found in ores but exist naturally as native metal?

• Silver and Zinc

• Lead and Nickel

• Gold and Platinum

• Iron and Copper

What type of compounds can minerals exist as in an ore?

• Hydroxides, Borates, and Silicates

• Nitrates, Phosphates, and Halides

• Oxides, Sulfides, and Carbonates

• Sulfates, Chromates, and Acetates