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33 Cards in this Set
- Front
- Back
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Atom |
Can only be broken down further to proton, neutron and electron. |
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Element |
Two or more of the same type of atom bound together |
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Compound |
Two or more different types of atoms bound together |
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Mixture |
Two or more compounds combined together |
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Reaction |
The rearrangement of atoms |
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Product |
What is made when atoms are rearranged (in a reaction) |
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Noble gas |
Has a complete outer shell of electrons |
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Molecule |
An electrically neutral group of two or more atoms held together by covalent chemical bonds |
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Covalent Bond |
A shared pair of electrons between atoms |
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Intermolecular Forces |
The forces of attraction between neighbouring molecules. Sometimes called Van der Waal's forces, they are weak |
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Electrical Conductivity |
The ability of a material to conduct electricity |
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Simple Structure |
When non-metallic elements chemically bonded to form simple molecules rather than giant structures. |
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Melting Point |
The temperature at which a solid becomes a liquid |
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Sonorous |
Sound made when a metal is struck |
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Deforming |
The act of bending or shaping a metal into a new shape |
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Delocalised Electrons |
The 'Free electrons' that are lost from the outer shells of metal atoms when they form ions in metallic bonding |
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Malleable |
The property of a metal that allows it to be hammered, pressed or bent into new shapes |
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Ductile |
The property of a metal that allows it to be drawn out into long thin wires or sheets under tensile stress |
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Alloy |
A material that has metallic properties and is composed of two or more chemical elements when at least one is metal |
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Shape Memory Alloy |
An alloy that can recover a predetermined shape after subjection to certain thermal conditions |
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Thermosoftening |
Soften when heated and reset when cooked. Made up of tangled Polymer chains |
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Nanoscience |
The science of really tiny things. Structures are just a few hundred atoms in size or smaller |
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Polymer |
A chemical usually made from oil and consisting of log chains composed of repeating monomeric subunits |
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Cross linking |
Strong covalent bonds between the long polymer chains |
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Monomer |
The individual repeating unit that a polymer is made up from |
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Thermosetting |
Do not melt when heated and are held together by strong, covalently cross linked chains |
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Graphite |
Made from layers of carbon that can slide over each other |
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Macromolecular |
A very large covalently bonded molecule |
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Lattice |
A network of millions of atoms and ions bonded together |
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Diamond |
A crystalline form of carbon which is very hard and has a very high melting point |
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Silicate |
E.g. Quartz, sand, glass |
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Fullerene |
A macromolecule that contains 60 carbon atoms |
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Giant covalent structure |
Millions of non-metal atoms bonded together in a network or lattice |
