Plastics

Which below are natural plastics?

• Amber, rubber and wool,

• Amber, rubber and wood,

• Amber, rubber and latex.

• Amber, rubber and cotton.

1. How are synthetic plastics made?

• Plastics are produced using a process known as polymerisation.

• Plastics are produced using a process known as polyisation.

• Plastics are produced using a process known as splitting.

• Plastics are produced using a process known as setting.

What three groups of plastics exist?

• Thermoplastics, natural and setting plastics.

• Thermplastics, thermoset and elastomers.

• Thermoplastics, setting and synthetic plastics.

• Thermoplastics, thermosetting and elastomers.

How many times can thermosetting plastics be heated and shaped?

• Once.

• Twice.

• Three times.

• Many times.

Polyvinyl chloride, methacrylate, teflon and cellophane are:

• Thermosetting plastics.

• Elastomers.

• Thermoplastic materials.

• Natural plastics.

Polyurethane, bakelite and melamine and polyester resins are:

• Thermosetting plastics.

• Elastomers.

• Thermoplastic materials.

• Natural plastics.

Natural rubber, synthetic rubber and neoprene are:

• Thermosetting plastics.

• Elastomers.

• Thermoplastic materials.

• Thermoplastic materials.

1. Synthetic plastics are made from:

• Cellulose, carbon and petroleum.

• Latex, cellulose and gas.

• Petroleum, natural gas and coal.

• Cellulose, latex and natural gas.

1. Plastics consist of long chains of molecules, mostly made of the element:

• Hydrogen.

• Oxygen.

• Carbon.

• Chlorine.

Non-biodegradable plastic is made from:

• Latex.

• Petroleum.

• Casein.

• Carbon.