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24 Cards in this Set
- Front
- Back
What are elements in the periodic table grouped in?
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Increasing atomic number
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What happens to the number of shells in an atom as you go down a group?
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The shell numbers increase
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What do elements in the same period have?
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Same number of shells
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What increases as you go along a period?
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The number of electrons and protons increase
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What happens to reactivity as you go down groups 1 and 2?
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It increases
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What happens to reactivity as you go down group 7?
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It decreases
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Where are non-metals on the periodic table?
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Far right
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How reactive are Group 0 (the halogens)?
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Not reactive, they have full outer shells.
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What do metals form when burnt in air?
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Basic oxides
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What do non-metals form when burnt in air?
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Acidic oxides
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Name 5 characteristics of the alkali metals?
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Low density
Soft with low melting points React with non-metals to achieve a +1 charge React with water and release hydrogen Form hydroxides which dissolve in water making alkaline solutions |
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What compounds do group 1 elements form?
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White solids which dissolve in water to form colourless solutions
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What 2 things happen to elements as you go down group 1?
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They get more reactive
The melting/boiling point decreases |
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What 3 reactions does Lithium have with water?
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Floats, fizzes, moves steadily around surface
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What 5 reactions does Sodium have with water?
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Floats, fizzes, moves quickly
Melts into ball, burns with yellow flame |
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What 4 reactions does Potassium have with water?
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Floats, fizzes, moves quickly
Burns with lilac flame |
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What are the 3 characteristics of Group 7 metals?
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Low melting/boiling points
Brittle, crumbly when solid Poor conductors of heat/electricity when solid or liquid |
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What do more reactive halogens displace? Give an example.
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Less reactive halogens from an aqueous solution of its salt.
e.g. Chlorine + potassium → potassium + bromine bromide chloride Cl₂ + 2KBr → 2KCl + Br₂ |
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What is OILRIG?
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Oxidation is loss (of electrons)
Reduction is gain (of electrons) |
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What is redox?
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Both reduction and oxidation occurring at once
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What happens when halogens react with metals?
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They form ionic salts (metal halides)
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What ending do halide salts have? Give an example.
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-ide
e.g. Chlorine and iron forms Iron Chloride |
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What do halogens form when they react with non-metals?
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Covalent compounds
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What 2 characteristics do halide salts have?
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Readily dissolve in water
Form acidic solutions |