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The are the natural substances.

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Q: Which groups of materials are not classified as synthetic?
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Biomaterials can be classified into two main groups: synthetic and natural biomaterials.


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Biomaterials can be classified into two main groups: synthetic and natural biomaterials.


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What is the envelope category classified as?

The envelope category is classified as a converting operation, since it transforms a finished product (rolls and sheets of paper and paperboard or synthetic materials) into envelopes.


Whats is the strongest rope?

Ropes are classified in 2 categories. The first is synthetic or natural materials such as cotton or hemp. The other type is non-synthetic rope which is made from non natural materials such as polypropylene, nylon, and polyesters. Synthetic fibre ropes are significantly stronger than natural fibers, but also have disadvantages.


Is polyurethane a synthetic?

Yes polyurethanes are synthetic materials.


Advantages and disadvantages and uses of synthetic materials?

Using synthetic materials, are less expensive for the suppliers to buy.


What are 2 synthetic materials?

Generally speaking synthetic materials are man made and do not occur in nature. Example are plastics certain alloys etc. There are some things that can be both synthetic and natural such as some drugs and chemicals


What are some synthetic materials?

Synthetic materials are man-made materials. Examples are: 1.polystyrene, 2.Polyethene, 3.polyester, 4.spandex,