Identifying Synthetic Fibers Properties

The video tutorial introduces synthetic fibers and plastics, followed by a practical activity to identify different types of fibers. It explains how to distinguish between cotton, rayon, silk, and synthetic fibers like nylon and polyester using a burn test. The characteristics of each fiber type when exposed to flame are described, such as burning behavior, smell, and residue formation.

What is the first step in the activity to identify synthetic fibers?

• Pull out a thread from the cloth

• Cut the cloth into pieces

• Burn the cloth directly

• Soak the cloth in water

If a thread catches fire easily and burns with a bright flame, what type of fiber is it likely to be?

• Nylon

• Acrylate

• Cotton or Rayon

• Polyester

Which fiber is identified by a smell similar to burning hair when it does not catch fire easily?

• Acrylate

• Nylon

• Polyester

• Silk

What happens to a synthetic fiber like nylon when it is exposed to a flame?

• It catches fire easily

• It smells like burning hair

• It melts in the flame

• It forms a black bead

Which synthetic fiber forms a black colored bead that cannot be crushed when exposed to flame?

• Nylon

• Polyester

• Cotton

• Rayon