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Y10 Module 8 Key Words
Y10 Module 8 Key Words
35
Chemistry
Not Applicable
04/26/2007

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Term
Alcohol
Definition
A family of chemicals made by fermenting sugars
Term
Alloy
Definition
A metal mixture, often with special properties
Term
Binge Drinking
Definition
Drinking excessive amounts of alcohol over a short space of time with the intention of getting completely drunk
Term
Breathability
Definition
Clothing that lets the water vapour from sweat escape has this
Term
Carbon Fibre
Definition
Fibres made from carbon atoms only. They are stiffer than steel
Term
Composite
Definition
Something made from more than one type of material, carefully arranged together
Term
Conductor
Definition
Something that lets energy, (such as heat or electricity), pass through it easily
Term
Dehydration
Definition
(of the body) Not having enough water in the body
Term
Distillation
Definition
Boiling a liquid and then cooling and condensing the gas; used to concentrate or purify
Term
Emulsifier
Definition
A chemical that stops the oil and water parts from seperating in emulsion
Term
Emulsion
Definition
Mixtures of water and oil that do not separate out
Term
Ethanoic Acid
Definition
The acid in vinegar. You may hear it called acetic acid, which is the old name for it
Term
Fermentation
Definition
The process in which yeast turns sugar into alcohol and carbon dioxide. Used to make beer and wine
Term
Gore-tex
Definition
A special fabric that can 'breathe' but keeps liquid water out
Term
Hydrophilic
Definition
'Water-loving' - chemicals that dissolve or mix completely with water
Term
Hydrophobic
Definition
'Water-hating' - chemicals like oil that do not 'mix' with water
Term
Intelligent packaging
Definition
Modern packaging that actively controls the environment around the food and stops it going bad
Term
Kevlar
Definition
A very strong plastic fibre that can be used for bullet-proof vests
Term
Lecithin
Definition
The chemical in egg yolk that acts as an emulsifier in mayonaise
Term
Lycra
Definition
A brand of very stretchy polymer (plastic) fibre
Term
Membrane
Definition
A very thin layer, or sheet, of material
Term
Microporous
Definition
Something with millions of microscopic holes (pores)
Term
Nanobot
Definition
A nano-sized machine or robot
Term
Nanocomposite
Definition
A material which has nanoparticles used in combination with other materials
Term
Nanometre
Definition
One billionth of a metre (10 -9m) - the scale of atoms
Term
Nanoparticle
Definition
A particle with a diameter of between 10 and 100 nanometres
Term
Nanotechnology
Definition
New technololgy built around the use of nanoparticles
Term
Nanotube
Definition
A nano-sized tube made by rolling up a sheet of carbon atoms
Term
Radiate
Definition
Spread out from a source. Eg. light from a bulb or infrared radiation from a hot object
Term
Rancid
Definition
Oils and fats go rancid when they react with oxygen. It makes them taste bad
Term
Shape-memory Alloy
Definition
A special alloy that goes back to its original shape on warming if you bend it
Term
Smart Material
Definition
A material that can change its properties when conditions change
Term
Sugar
Definition
A sweet-tasting chemical found naturally in fruits
Term
Telfon
Definition
The material used to coat 'non-stick' pans
Term
Thinsulate
Definition
A brand of insultating material that is made from very fine polypropene fibres. Polypropene is a type of plastic
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