Question 1: Describe what a polymer is and explain one key property that makes polymers suitable for use in everyday products.

Answer: A polymer is a large molecule made up of many repeated subunits called monomers. A key property is their flexibility or lightweight nature, making them suitable for various applications such as packaging and clothing.

Question 2: Identify and explain two common types of polymers used in the manufacturing of household items.

Answer: Two common types of polymers are polyethylene, used in plastic bags and bottles, and polypropylene, used in food containers and car parts. Both are durable, versatile, and resistant to chemicals.

Question 3: Explain the difference between thermoplastics and thermosetting plastics, including how each type responds to heat.

Answer: Thermoplastics can be melted and reshaped multiple times without significant chemical change, making them recyclable. Thermosetting plastics, once heated and shaped, undergo a chemical change that makes them hard and inflexible; they cannot be remelted or reshaped.

Question 4: Design Brief: You need to create a lightweight, durable container for storing food. Which type of polymer would you choose and why? Provide a brief explanation.

Answer: Polyethylene would be suitable because it is lightweight, has good chemical resistance, and is durable, making it ideal for food containers.

Question 5: Draw a simple sketch of a plastic product that could be used as a protective cover for a mobile phone. Label the key features in your sketch.

Answer: A correct sketch would show a thin, flexible, and slightly curved plastic cover with cutouts for buttons and camera. Labels should include 'flexible material', 'cutouts', and 'clipping edges'.

Question 6: List three advantages of using polymers over metals in product design.

Answer: Polymers are lightweight, corrosion-resistant, and can be easily moulded into complex shapes.

Question 7: Identify a common polymer used in the manufacture of flexible packaging and explain why it is suitable.

Answer: Polyethylene is commonly used because it is flexible, transparent, and resistant to moisture, making it ideal for packaging.

Question 8: Propose a new product that could be made from a biodegradable polymer. Describe the product and why biodegradable polymers are beneficial.

Answer: A biodegradable shopping bag could be made from biodegradable polymers, which break down naturally in the environment, reducing plastic pollution and waste.

Question 9: Sketch a concept for a reusable water bottle made from polymer material. Include features that improve its usability.

Answer: A successful sketch would show a contoured shape for gripping, a screw-top lid, a flexible body for squeezing, and a spout for drinking. Labels should include 'ergonomic design', 'easy-open lid', and 'flexible material'.

Question 10: Explain why polymers are often chosen for products that require complex shapes or intricate designs.

Answer: Polymers can be easily moulded into complex shapes and fine details through processes like injection moulding, making them ideal for intricate designs.