Question

Which among the following materials would you identify as soft materials and why? Ice, rubber band, leaf, eraser, pencil, pearl, a piece of a wooden board, cooked rice, pulses and fresh chapati.

Answer 1

Soft materials:

• “Soft materials are the ones that can be easily compressed by stress/fluctuations at about room temperature.”
• The materials such as polymers, gels, foam, etc are soft materials.

The materials that come under the category of soft materials are:

1. Leaf
2. Rubber band
3. Cooked rice
4. Eraser
5. Fresh chapati

Hard materials:

• “The hard materials are the ones that cannot be compressed easily.”

The materials that come under the category of hard materials are:

1. Ice
2. Pencil
3. Pearl
4. A piece of a wooden board
5. pulses