Material World - Year 9 Science
Key words for Year 9 chemistry (VELS), looking at plastics, metals, colloids and other materials.
a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten
a mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions and that are suspended in a liquid, solid, or gas
a substance that readily conducts e.g. electricity and heat
Polymer in which two different monomers alternate.
a term used to describe a material that can be pulled out into a long wire
any mixture of two or more immiscible liquids in which one liquid is dispersed in the other
A type of colloid in which a solid is spread throughout a liquid.
capable of being shaped or formed; tractable; pliable
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
an element that has properties of both metals and nonmetals
elements that are brittle, dull in appearance, poor conductors of heat and electricity and not able to be polished to a shine (eg. carbon)
Substances that inhibit the flow of electrons when subjected to electrical forces. Also known as insulators.
A long molecule consisting of many similar or identical monomers linked together.
capable of being shaped, molded or modeled.
a simple compound whose molecules can join together to form polymers
a material that softens when heated and hardens again when cooled
plastics that char (blacken) when heated instead of softening. They are a fixed shape and cannot be remoulded.
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