Metals & Mineral Ores

Which element in unlikely to occur as a native metal?

• Gold

• Silver

• Copper

• Aluminium

What extraction method is needed for the mineral ore hematite?

• Electrolysis

• Refining

• Heating with carbon

• Extraction with another metallic element

Is an alloy a mixture or pure substance?

• Pure substance

• Mixture

Bronze is a mixture of what two metallic elements?

• Copper

• Lead

• Tin

• Alluminium

Brass is a mixture of which two metallic elements?

• Tin

• Zinc

• Copper

• Iron

What is the best mineral ore for extracting aluminium?

• Bauxite

• Barite

• Beryl

• Bornite

For minerals, what does the Mohs Scale measure?

• Conductivity

• Density

• Luster

• Hardness

Why are aluminium and copper used in electrical wires?

• More affordable than silver

• Excellent conductivity

• Low resistance

• High densisty

What were the first two elements to exist?

• Helium

• Carbon

• Iron

• Hydrogen

How does the sun generate energy?

• Nuclear fision

• Nuclear fusion

• Nuclear synthesis

• Heat transfer