4.1 POLYMERS

4.1 POLYMERS

Let's test your understanding after the video lesson

Multiple Choice

Which of the following is NOT a natural polymer?

• Starch

• Cotton

• Nylon

• Protein

Multiple Choice

Which of the following is NOT a polymer?

• Polyethene

• Protein

• Natural rubber

• Vinyl chloride

Fill in the Blank

Basic unit of polymer is ......................

Multiple Choice

Once formed, it can be heated and reformed over and over again

• thermoset

• thermoplastic

• elastomer

• kevlar

Multiple Choice

A polymer made in the laboratory (or industry) usually made from petrochemicals

• nature polymer

• natural polymer

• protein

• synthetic polymer

Multiple Choice

Which elements create covalent bonds?

• metals

• metalloids

• nonmetals

• transition metals

Multiple Choice

What kind of chemical bonds create polymers?

• ionic

• covalent

• hydrogen

• metallic

Multiple Choice

Why do you think people use plastic for their products ?

• Because it's strong

• Because its very cheap and it's easy to make

• Because it's expensive

• Because it's rare and it's good for the enviorment

Multiple Choice

Which polymers occur naturally?

• Starch and Nylon

• Starch and Cellulose

• Proteins and Nylon

• Proteins and PVC

Multiple Choice

Proteins are composed of what smaller subunits?

• amino acids
• nucleic acids
• fatty acids
• nucleotides

Multiple Choice

A condensation polymerisation reaction produces two products. The polymer and...

• Water

• An alkene

• An alkane

• Hydroxide

Multiple Choice

Which molecule is the monomer used to make polythene?

• Ethane

• Ethene

• Propane

• Propene

Multiple Choice

Nylon is which sort of polymer?

• Thermosetting

• Elastomer

• Ferrous

• Thermo plastic

Open Ended

Microplastics in the ocean is one of the serious pollution that affect our environment. One way to help our environment is through green technology.

Question : What is your opinion on this matter?

You can include :

1. How microplastics affect our environmet?

2. What is microplastics?

3. How green technology could save the environment and improve our life?

Share your opinions. Your answer must be more than 3 sentences.

Make sure you have gone through the video lessons and articles

Poll

What do you think of today's lesson?

• Hard

• So-so. I need more turotials and exercises

• Quite easy