Understanding Polymers and Their Applications

What is a polymer?

• A long chemical chain of monomers

• A type of natural rubber

• A small molecular unit

• A type of synthetic fiber

What does 'poly' mean in the context of polymers?

• Few

• Many

• Two

• One

Which of the following is a synthetic polymer?

• Protein

• Cellulose

• Starch

• Plastic

What environmental issue is associated with plastics?

• They produce harmful gases

• They do not break down easily

• They break down too quickly

• They consume less space in landfills

What is the primary environmental concern with synthetic polymers like plastics?

• They are made from scarce resources

• They are expensive to produce

• They are non-biodegradable

• They cause air pollution

What happens when a sharp pencil pierces a water-filled plastic bag?

• The bag leaks significantly

• The bag completely disintegrates

• The polymer chains seal around the pencil preventing leaks

• The water explodes out

What demonstrates the flexibility and sealing properties of polymers in the video?

• Mixing polymers with water

• Piercing a water-filled plastic bag with a pencil

• Stretching a rubber band

• Bouncing a basketball

Why doesn't a hacky sack bounce like a basketball?

• It converts kinetic energy to thermal energy

• It is made of rubber

• It is too light

• It lacks internal air pressure

What is the main reason hacky sacks don't bounce?

• They are not round enough

• They are made of soft materials

• They convert kinetic energy to thermal energy

• They are too heavy

What is the role of borax in making bouncy balls?

• It reduces the bounce

• It colors the balls

• It acts as a filler

• It helps in forming knots in the polymer chains