Making Materials Revision Crossword

Hard but easily broken or cracked
When rubber is heated with sulphur, forming cross links and changing the materials properties
A range of hard, durable and non metallic metals generally unaffected by heat
A reaction that joins monomer molecules together to form a polymer
A limited resource that will eventually run out
A reaction that absorbs energy from the surroundings, making the temperature of surroundings fall
A reaction that transfers energy to the surroundings, making the temperature of surroundings rise
Using materials again, often by melting to make new products.
A fuel formed from the dead remains of organisms over millions of years.
A material made up of two of more materials, combing properties of each.
Capable of being broken down by organisms in the soil.
Not capable of being broken down by organisms in the soil.
This is caused by impurities in fuel and can cause acid rain.
This helps trap the suns energy and increases the greenhouse effect.
A large area where rubbish is left.
Dangerous to humans and the environment.