5.3 Metals and Their Extraction

What determines the method used to extract metals?

• The color of the metal

• The reactivity of the metal

• The weight of the metal

• The density of the metal

What is involved in the extraction of metals from their ores?

• Precipitation reactions

• Redox reactions

• Neutralization reactions

• Oxidation reactions

Which metal is extracted using electrolysis?

• Gold

• Aluminium

• Copper

• Iron

What is a characteristic of transition metals?

• Low melting points

• Low densities

• Form colored compounds

• Act as insulators

What is the role of electricity in electrolysis?

• To increase density

• To heat the metal

• To break down electrolytes

• To cool the metal

What can be predicted for a given electrolyte in electrolysis?

• The pH level

• The temperature change

• The products of electrolysis

• The color of the solution

What is one use of electrolysis besides extraction?

• Cooling metals

• Electroplating

• Melting metals

• Heating metals

Which of the following is NOT a property of transition metals?

• High melting points

• High densities

• Form colorless compounds

• Act as catalysts

What is the reactivity series used for?

• To predict how metals will react

• To predict metal weights

• To predict metal colors

• To predict metal shapes

Which process is used to extract iron?

• Oxidation

• Electrolysis

• Precipitation

• Reduction within the blast furnace