Question 1: Name three common metals used in everyday objects and briefly state one property of each.

Answer: Steel: Strong and durable; Aluminium: Lightweight and corrosion-resistant; Copper: Good electrical conductor.

Question 2: Describe the process of how metal is extracted from its ore in a basic way.

Answer: Metals are extracted from ores through processes like smelting, where the ore is heated in a furnace to separate the metal from other materials.

Question 3: List two advantages and two disadvantages of using metals in product design.

Answer: Advantages: Strong and durable; Recyclable. Disadvantages: Heavy weight; Can corrode or rust.

Question 4: A designer is creating a lightweight, corrosion-resistant bicycle frame. Which metal would you recommend and why?

Answer: Aluminium, because it is lightweight and resistant to corrosion, making it ideal for a bicycle frame.

Question 5: Identify two ways to join metals together in manufacturing.

Answer: Welding and riveting.

Question 6: Sketch a simple design for a keyring using a metal that is both lightweight and durable. Label your sketch with the metal you would choose and explain why.

Answer: A circular or oval keyring shape drawn clearly, with labels indicating 'aluminium' or 'stainless steel', and an explanation such as 'Chosen for lightness and strength.'

Question 7: Explain why some metals are considered 'ferrous' and others 'non-ferrous'.

Answer: Ferrous metals contain iron, tend to rust, and include steel and cast iron. Non-ferrous metals do not contain iron and are usually more resistant to corrosion, such as aluminium and copper.

Question 8: Describe the main differences between cast iron and aluminium in terms of properties and uses.

Answer: Cast iron is very hard, brittle, and good for heavy-duty applications like engine blocks. Aluminium is lightweight, malleable, and used in aircraft and packaging.

Question 9: Draw a plan for a small metal box that could be used to store jewellery. Indicate the type of metal suitable for the box and justify your choice.

Answer: A rectangular box with a lid, drawn with dimensions. Labels indicating 'steel' or 'stainless steel' for durability and appearance, with a note explaining the choice for strength and corrosion resistance.

Question 10: What are the main environmental benefits of recycling metals?

Answer: Recycling metals conserves natural resources, reduces energy consumption, and decreases waste in landfills.