Properties are features or characteristics of a substance that can be used to classify it, or describe how it behaves.

Landfill is a waste disposal site. At landfill sites the waste is buried between layers of soil and other unreactive material.

Combustion is an exothermic reaction where a substance reacts with oxygen.

Recycling is a process that involves turning waste material into new products.

The starting materials used to make products are known as the raw materials. Wood, metal and crude oil are examples of raw materials.

Polymer properties and problems

Chemistry

In the Chemistry of Carbon unit, pupils learned about the structure and bonding of carbon, and its ability to form various compounds.

Poly(propene) is strong and flexible which makes it suitable for use in which item?

What is the name of the process that involves turning waste material into new products?

Releases energy that can be used to generate electricity.

Prevents the release of carbon dioxide into the atmosphere.

Prevents the release of toxic gases, such as HCl, into the atmosphere.

Which of the following are advantages of disposing of polymer waste by incineration?

It releases energy that can be used to generate electricity.

What is a problem of incinerating a polymer that contains chlorine atoms?

Crude oil can be processed to produce alkenes.

Crude oil is a renewable energy resource.

Crude oil is the raw material in the food industry.

Which of the following statements about the raw material crude oil are true?

Which of the following are costs associated with recycling waste polymers?

A solution contained the hazard symbol shown in the image. What does this hazard symbol mean?

What are the products from the complete combustion of ethene?

Which of the following are physical properties of a plastic carrier bag?

How could we dispose of plastic polymer waste?

Which of the following are examples of raw materials?

It is inconvenient to dispose of waste at landfill.

Methane gas is released from landfill sites.

Which of the following are disadvantages of landfill?