KUIZ KIMIA POLIMER

What are the basic repeating units that link together to form a polymer?

• Atoms

• Molecules

• Monomers

• Elements

Which of the following natural polymers is formed from glucose monomers?

• Protein

• Natural rubber

• Starch

• Polypropylene

Which of the following products is commonly made from natural rubber?

• Plastic bottles

• Textiles

• Tires

• PVC pipes

What is the monomer unit that forms polypropylene?

• Ethene

• Propene

• Styrene

• Vinyl chloride

What are the primary characteristics and common uses of Polyvinyl Chloride (PVC)?

• Tough and used for plastic bags.

• Strong, hard, and used for pipes and electrical insulation.

• Soft, flexible, and used for textiles.

• Lightweight and used for food packaging.

Which of the following describes the properties of polystyrene?

• Heavy and poor heat insulator

• Lightweight and good heat insulator

• Heavy and good electrical conductor

• Lightweight and poor electrical conductor

Synthetic polymers can be classified into which three main categories?

• Natural, synthetic, and semi-synthetic

• Thermoplastics, thermosetting plastics, and elastomers

• Addition, condensation, and natural

• Organic, inorganic, and metallic

What happens to the polymer chains in a thermoplastic when it is heated?

• They form strong cross-links, making the material rigid.

• They break down into individual atoms.

• They slide past each other, making the material soft and pliable.

• They undergo a chemical reaction, changing the material's composition.

What is a fundamental difference in the structure of thermosetting plastics compared to thermoplastics?

• Thermosetting plastics have linear polymer chains, while thermoplastics have branched chains.

• Thermosetting plastics have strong cross-links between polymer chains, while thermoplastics do not.

• Thermosetting plastics are made from natural monomers, while thermoplastics are synthetic.

• Thermosetting plastics have a lower melting point than thermoplastics.

What is a monomer in the context of polymers?

• A long chain molecule formed from repeating units.

• A type of synthetic rubber with elastic properties.

• The basic repeating unit that forms a polymer.

• A process where polymers break down into smaller units.