Understanding Polymers and Their Properties

Jojo's Science Show demonstrates how to make fake snow using a polymer gel. The video explains the concept of polymers, their everyday examples, and the process of cross-linking. It highlights the properties of super absorbent polymers, such as those used in diapers and Orbeez. The video concludes with a call to action for viewers to engage with the content and remember that science is fun.

What is the main material used in the fake snow experiment?

• Starch

• Sodium polyacrylate

• Polyester

• Cellulose

What is a polymer?

• A single molecule

• A type of gas

• A long chain of molecules

• A type of metal

Which of the following is NOT an example of a polymer?

• Cellulose

• Plastic

• Water

• Starch

What is the process called when polymer chains are joined together?

• Cross-linking

• Polymerization

• Hydrolysis

• Condensation

What happens to a polymer when it absorbs water?

• It dissolves

• It shrinks

• It evaporates

• It swells

What does 'hydrophilic' mean?

• Oil-loving

• Oil-repelling

• Water-loving

• Water-repelling

Why are super absorbent polymers used in baby diapers?

• They are colorful

• They are cheap

• They are biodegradable

• They can hold a lot of liquid

What is the main reason Orbeez swell up in water?

• They are made of metal

• They are heated

• They contain super absorbent polymers

• They are hydrophobic

What is the role of sodium acrylate in the fake snow?

• It acts as a colorant

• It helps the snow melt

• It makes the snow hard

• It absorbs water to expand

What is the purpose of cross-linking in polymers?

• To make them dissolve

• To create a network structure

• To change their color

• To make them lighter