Types of Plastics

What is the largest market for plastics today?

• Baby toys

• Disposable crockery and utensils

• Packaging materials

• Garbage bags

Answer explanation

The largest market for plastics today is packaging materials, as they are widely used in various industries for packaging goods and products.

Tags

NGSS.MS-PS1-3

Which are the correct properties of plastic?

• Corrosive, waterproof, lightweight, cheap

• Corrosive, waterproof, lightweight, expensive

• Unreactive, waterproof, lightweight, cheap

• Unreactive, waterproof, lightweight, expensive

Answer explanation

The correct properties of plastic are unreactive, waterproof, lightweight, and cheap, making the option 'Unreactive, waterproof, lightweight, cheap' the correct choice.

Tags

NGSS.MS-PS1-3

Which of the following is not a plastic?

• Printer ink

• Nylon

• Styrofoam

• Vinyl flooring

Answer explanation

Printer ink is not a plastic because it is a liquid used for printing, while nylon, Styrofoam, and vinyl flooring are all types of plastics.

Plastics can be divided into 2 main categories: Thermoset plastics and Thermoplastics. One reason thermoplastics are better for the environment is that....

• They are naturally found in nature

• They are completely non-toxic

• They are made from biodegradable elements

• They can easily be melted, remolded and recycled

Answer explanation

They can easily be melted, remolded and recycled

Tags

NGSS.MS-ESS3-3

NGSS.MS-PS1-3

What do these symbols indicate?

• The number of times a plastic has already been recycled

• The number of times a plastic can be recycled in the future

• The type of plastic used

• The country where the plastic was made

Answer explanation

The symbols indicate the type of plastic used, not the number of times recycled or the country of origin.

Where can you find these symbols?

• On various plastic containers and packaging

• Only on recyclable plastic items

• On items made from recycled plastic

• On recycling bins

Answer explanation

The symbols can be found on various plastic containers and packaging, indicating information about the type of plastic used and recycling instructions.

Although PET 1 plastic bottles are 100% recyclable, only about ____ % are actually recycled.

• 2

• 7

• 30

• 45

Answer explanation

Only about 30% of PET 1 plastic bottles are actually recycled, despite being 100% recyclable.

Disposable plastic water bottles fall into the first category. This is the easiest type of plastic to recycle, but...

• It is permeable to carbon dioxide

• It readily reacts with most acids

• It is difficult to shape after recycling

• It can be harmful to health if reused or drinks are left in it for a long time

Answer explanation

The correct choice highlights that disposable plastic water bottles can be harmful to health if reused or drinks are left in it for a long time.

Tags

NGSS.MS-ESS3-4

Which plastic numbers are not easily recyclable?

• 1, 5

• 4, 2

• 3, 6

• None, all plastics can be recycled

Answer explanation

Plastic numbers 3 and 6 are not easily recyclable due to the complexity of their composition and recycling process.

Polyester is a type of plastic which is often combined with cotton to make clothing. Advantages of this are that...

• It makes the fabric fire-resistant

• It gives the fabric a softer feel

• It makes the fabric more wrinkle- and tear-resistant

• it makes it easier to dye the fabric

Answer explanation

The correct choice is that polyester makes the fabric more wrinkle- and tear-resistant, which is an advantage of combining it with cotton for clothing.

Tags

NGSS.MS-PS1-3