AQA DT Alevel Unit 2.1 Polymer properties

Which mechanical property refers to a material's ability to bend without breaking?

• Toughness

• Flexibility

• Elasticity

• Mouldability

Which mechanical property refers to a material's ability to return to its original shape after being stretched or compressed?

• Toughness

• Flexibility

• Elasticity

• Mouldability

Balloons are made from polymers called elastomers such as:

• Nylon or polyester

• Rubber or latex

• Polyethylene or polypropylene

• Polystyrene or polyurethane

Polyurethane is primarily used in which industry for its elasticity?

• Automotive

• Textile

• Construction

• Electronics

What is the main property of elastomers that makes them suitable for making balloons?

• High density

• High elasticity

• High thermal conductivity

• High electrical conductivity

Which of the following is NOT a mechanical property?

• Toughness

• • Flexibility

• • Elasticity

• Electrical conductivity

Which of the following is NOT a physical property?

• Melting point

• • Corrosion resistance

• • Elasticity

• Electrical conductivity

What happens to thermoplastics when they are heated?

• They become hard and brittle

• They become soft, pliable, and can be shaped and moulded

• They decompose and char

• They remain unchanged

How does UV radiation affect polymers like ABS?

• It strengthens the polymer's mechanical properties.

• It bleaches the color and degrades the polymer.

• It makes the polymer more flexible.

• It increases the polymer's resistance to heat.

Which polymer is used to manufacture bleach bottles because of it's high chemical resistance?

• Polyvinyl chloride (PVC)

• Low density polyethylene (LDPE)

• High density polyethylene (HDPE)

• Polystyrene (PS)