Glossary
- Apothecary - a pharmacist.
- Biodegradable - capable of decaying.
- Commercially manufacture - Involved in production that is intended for mass market.
- Contact - the act or state of touching.
- Copper - a metal with a reddish brown colour.
- Expand - to increase in size and volume.
- Extruded - to force out.
- Flammable - easily set on fire.
- Insulator - a material of such low conductivity that a current cannot flow through it.
- Isolate - to set or place apart.
- Pelites - any clayey rock.
- Pentane - a hydrocarbon of the methane series, existing in three liquid isomeric forms .
- Polymer - a compound formed from two or more polymeric compounds.
- Purity - the condition or quality of being pure.
- Resemble - to be like or similar to.
- Revolutionise - a change in refining methods.
- Styrofoam - a brand of expanded plastic made from polystyrene.
- Technology - the branch of knowledge that deals with the creation and use of technical means.
- Thermoplastic - soft and pliable as, like some plastics, when heated, without any change of the inherent properties.
- Transparent - easily seen through.