Explain the difference on the basis of properties :–
(1) Thermosetting plastics and thermoplastics.
(2) Physical properties of metals and non metal physical properties.
(3) Useful micro organisms and harmful micro organisms.
Answers
Answer:
Thermoplastic plastics Thermosetting plastics
1. Thermoplastic can be easily bent. 1. Thermosetting plastics cannot be easily bent. If forced to bend, they will break.
2. Softens on heating 2. Do not soften on heating
3. Can be moulded and reshaped 3. Cannot be moulded and reshaped.
4. Expensive 4. Cheaper
Answer:
1answer:-Thermoplastic plastic
Thermoplastic plastics -----Thermosetting plastics
1. Thermoplastic can be easily bent. 1. Thermosetting plastics cannot be easily bent. If forced to bend, they will break.
2. Softens on heating 2. Do not soften on heating
3. Can be moulded and reshaped 3. Cannot be moulded and reshaped.
4. Expensive 4. Cheaper
5. Recyclable 5. Not recyclable
6. Soft and weak 6. Hard and strong
7. It is used in making toys,combs and various containers. 7. It is used in making handles of cooking utensils.
8. Example: Polythene and PVC 8. Example: bakelite and melamine