International General Certificate of Secondary Education (IGCSE) Chemistry Practice Exam

What is the use of poly(ethene)?

1. Plastic pipes

2. Plastic bags and bottles

3. Plastic gears

4. Plastic displays

The correct answer is: Plastic bags and bottles

Poly(ethene), commonly known as polyethylene, is a versatile polymer used widely in various applications due to its properties such as flexibility, durability, and resistance to chemicals. One of the primary uses of poly(ethene) is in the production of plastic bags and bottles. Plastic bags made from poly(ethene) are lightweight yet strong, making them excellent for carrying and storing various items. Similarly, polyethylene bottles are prevalent because they are resistant to impact and can hold liquids without leaking, making them ideal for beverages and other liquid products. The ability to mold poly(ethene) into different shapes and sizes adds to its utility in creating a vast array of packaging solutions. While plastic pipes, gears, and displays do utilize various other types of plastics, they may not specifically highlight the most common uses of poly(ethene). For example, plastic pipes are often made from high-density polyethylene (HDPE), which is a specific variation of polyethylene. However, plastic bags and bottles represent the most widespread consumer applications of poly(ethene), directly linking to its fundamental characteristics and manufacturing processes that favor mass production in packaging industries.