C1 AQA year 9

  • Created by: MiaT212
  • Created on: 26-11-18 18:42
what does the atomic number (at the bottom) tell you?
how many protons and electrons there are each
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what does the atomic mass (at the top) mean?
the amount of nucleons (protons and neutrons added together) in the atom
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what do periods (rows) tell you?
how many outer shells an atom has
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what does the groups tell you?
the number of electrons on its outer shell
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what is displacement reactions?
where a more reactive halogen displaces less reactive halogens from their metal halide solution
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chlorine + potassium iodide -->
potassium chloride + iodine
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what are halogens?
diatomic
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what do alkali metals form when reacted with water?
metal+ water----> metal hydroxide +hydrogen gas
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why are noble gases unreactive?
because they have a full outer shell of electrons meaning they have a stable electronic structure.
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what rule do you use when drawing an electronic structure
2,8,8,8 etc..
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what was daltons model?
tiny hard spheres that have no space
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what was bohrs model?
electrons would orbit the nucleus in shells
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what was rutherford's model?
atoms had mostly empty space with a tiny nucleus
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what was thompsons model?
atoms are positively charged spheres embedded with electrons
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why was thompsons model called the plum pudding?
It reminded them of a sponge pudding with plums dotted throughout
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what is fractional distillation?
is where you separate liquids with different boiling points by heating to the lowest one it will evaportae first and condense ina diff container.
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what is basic distillation?
separates soluble solids from liquids
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Other cards in this set

Card 2

Front

what does the atomic mass (at the top) mean?

Back

the amount of nucleons (protons and neutrons added together) in the atom

Card 3

Front

what do periods (rows) tell you?

Back

Preview of the front of card 3

Card 4

Front

what does the groups tell you?

Back

Preview of the front of card 4

Card 5

Front

what is displacement reactions?

Back

Preview of the front of card 5
View more cards

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