Yr.10. Unit 2. Plastics

WHERE DO WE FIND PLASTIC?

• FROM TREES
• We get plastic from oil and natural gaseS
• FROM HUMAN BEINGS
• FROM ANIMALS

what is plastic made out of ?

• just plastic 
• cellulose, coal, natural gas, salt and crude oil
• metal 
• i don't 

WHAT IS PLASTIC?

• Plastics are typically organic polymers of high molecular mass
• IS GLASS
• IS A KIND OF CHEMYCAL MATERIAL
• Materials that can be reshaped (remolded) by applying heat and pressure

Why is plastic used so much?

• it is rigid.
• is is flexible.
• it is expensive.
• it is cheap and versatile.

Select the two plastic families?

• Thermoplastic

• Acrylic

• Thermosetting Plastic

• Epoxy Resin

Which plastic is better for the environment ?

• thermosetting plastic

• thermoplastics

what properties does a thermosetting plastic have ?

• It is a material that when heat is applied it can be reformed and recycled.

• A plastic that cannot be recycled and burns when heat is applied.

• A very heavy plastic.

• A colorful plastic

Which plastic is best suited for high temperature applications ?

• Thermosetting plastic

• Thermoplastics

• All of the above

Which plastic melts to liquid when enough heat is applied ?

• Thermoplastics

• Thermosetting plastics

• Both plastics melt when enough heat is applied

Which of these plastics are not suitable for Line bending

• Acrylic

• Epoxy Resin

• Ridid polystyene

• Perspex

Answer explanation

Epoxy resign is a Thermosetting Plastic. While the rest are Thermoplastics. Perspex is a high quality type of Acrylic