G9 IGCSE Finals Review 1

what colour does Universal Indicator go in a liquid with pH of 5?

• red

• yellow

• green

• blue

What allows metals to conduct electricity?

• Low melting point

• High density

• Strong metallic bonds

• Presence of free electrons

Which property describes metals' ability to be drawn into wires?

• Brittleness

• Conductivity

• Ductility

• Malleability

What is a characteristic of metals regarding their melting and boiling points?

• They have variable melting and boiling points

• They have high melting and boiling points

• They have low melting and boiling points

• They have no melting or boiling points

What do metals form when they react with cold water?

• Metal sulfate and oxygen gas

• Metal hydroxide and hydrogen gas

• Metal chloride and hydrogen gas

• Metal oxide and oxygen gas

Which metal reacts strongly with steam?

• Iron

• Copper

• Zinc

• Magnesium

What happens when metals react with dilute hydrochloric acid?

• They produce a salt and oxygen gas

• They produce a salt and hydrogen gas

• They produce a metal hydroxide

• They do not react

What is a property of aluminium?

• Light and strong

• Poor electrical conductor

• Highly reactive

• Heavy and brittle

What is the main use of copper?

• Construction purposes

• Water pipes

• Overhead power lines

• Food packaging

Which of the following metals does not usually react with water?

• Calcium

• Potassium

• Sodium

• Aluminium