Material Choices

Key words from module 2

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Material
The polymers,metals,glasses and ceramics that we use to make objects out of.
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Properties
The physicals or chemical characteristics of a chemical. The properties are what make it different to othermaterials
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Polymer
A material made of very long molecules formed by joining lots of smaller molecules together
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Natural
A material which occurs naturally but may need processing eg silk
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Synthetic
A material which is made by chemical process, not naturally occuring
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Ceramic
A solid materialsuch as pottery or glass.cement and brick
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Metal
The element on left of the periodic table. They are shiny, conduct electricity react with acid to form salts and hydrogen.
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Mixture
Two or more chemicals which are not chemically joined.
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Flexible
A material which will bend easily without breaking
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Rubber
A naturally derived polymer
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Strong
A material that is hard to pull apart or crush
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Tension
A material in tension is able to withstand forces pulling it apart
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Compression
A material in compression has forces which are trying to push it together and make it smaller
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Stiff
A material which is difficult to bend.
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Hard
A material which is difficult to dent or scratch.
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Soft
A material which is easy to dent or scratch.
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Accuracy
How close a quantative value is to the true / actual value.
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Fibre
Long thin threads which make up material such wool and polyester used for textiles
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Repeatable
A quality of measurment that gives the same reult when repeated under the same conditions.
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Reproducible
A quality of a measurement that gives the same results when carried out by different people or with different methods or equipment
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Macroscopic
Large enough to be seen without a microscope.
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Nanometre(nm)
A unit of length 1 000 000 000 times smaller than a metre.
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Monomer
A smaller molecule that can be joined to others like it in a long chain to make a polymer.
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Polymerise
The joining together of lots of small molecules called monomers to form long chained polymers.
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Vulcanisation
A process for hardening naturally occuring rubber by making cross links
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Cross links
A link or bond joining chains together.
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Durable
A material is durable if it is long lasting and does not wear out.
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Plasticiser
A chemical usually a small molecule added to a polymer to make it more flexible.
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Crystalline
A polymer which lines up in a regular way as in a crystal.
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Melting point
The temperature at which a solid will break chemical bonds and turn into a liquid
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Crude oil
A dark oily liquid found in the Earth , which is a mixture of hydrocarbons
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Hydrocarbon
A compound which consists of carbon and hydrogen only chemically joined.
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Fraction
A mixture of hydrocarbons with a simillar boiling points that have been separated by fractional distillation
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Fractional Distillation
A method of separating a misture into groups with similar boiling points.
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Chemical Synthesis
Making a new chemical by joining together a more simple chemical
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Nanotechnology
The control of matter on a tiny scale.
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Nanoparticle
A very tiny particle, whose scale can be measured in nanometres
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Other cards in this set

Card 2

Front

The physicals or chemical characteristics of a chemical. The properties are what make it different to othermaterials

Back

Properties

Card 3

Front

A material made of very long molecules formed by joining lots of smaller molecules together

Back

Preview of the back of card 3

Card 4

Front

A material which occurs naturally but may need processing eg silk

Back

Preview of the back of card 4

Card 5

Front

A material which is made by chemical process, not naturally occuring

Back

Preview of the back of card 5
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Comments

lisa linsdell

A good revision aid for all the key words in the module. check understanding of all the key words that might come up in any exam on this topic

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