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21 Cards in this Set
- Front
- Back
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across a period: nature of elements |
non-metallic nature increases |
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across a period: chlorides |
group i-iii: ionic chlorides group iv-vii: covalent chlorides |
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across a period: structure |
group i-iii: giant metallic structure group iv: giant molecular structure group v-vii: simple molecular structure group 0: free atoms |
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across a period: oxides |
group i-ii: basic oxides group iii: amphoteric oxides group iv-vii: acidic oxides |
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noble gases physical properties (4) |
monatomic
colourless, odourless low mp and bp insoluble in water |
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nobles gases chemical properties (1) |
chemically unreactive |
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uses for helium |
weather balloons low density and non flammable |
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uses for neon |
advertising signs glows brightly when electricity passes through |
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uses for argon |
in light bulbs prevent filament from reacting with oxygen |
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halogens physical properties (5) |
low mp and bp (increases down the group) coloured non-conductors soluble in organic solvents reactivity decreases down group |
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halogens chemical properties |
reacts with metals to form halides |
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fluorine state at rtp colour |
gas pale yellow |
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chlorine state at rtp colour |
gas yellow-green |
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bromine state at rtp colour |
liquid reddish brown |
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iodine state at rtp colour |
solid black purple |
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alkali metals physical properties (4) |
density increases down group soft low mp bp good conductors |
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alkali metals chemical properties |
very reactive increases down group |
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alkali metals + water |
metal hydroxide and oxygen |
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alkali metals + chlorine |
metal chloride |
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transition metals (6) |
hard and lustrous strong alloys high density high mp bp variable oxidation states forms coloured compounds |
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transition metal uses |
catalysts |
