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30 Cards in this Set
- Front
- Back
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alkali metals properities |
react vigorosuly with water, hydrogen gas given off, metal reacts with water to form a alkiali |
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why do group 2 elements share similar properities? |
they all have one outer electron |
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atoms of alkiali metals react, losing one? |
electron |
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after they lose one electron? |
they become a stable electronic structure and a ion which has one more positive charge than negative in the atom so its a positive ion |
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the easier for an atom of an alkia metal to lose one electron the more? |
reactive the element |
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if electrons are lost, whats is called? |
oxidation |
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how is a test for alkila metals done? |
dipped in diulte hydrochloric acid, flame test wire is dipped on the solid chemical, flame test wire is put in a blue bunsen burner flame and the colours are recorded |
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what are the colour of lithium? |
red |
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sodium? |
yellow |
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potassium? |
lilac |
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at room temp what colour is chlorine?
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green gas
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what colour is bromine?
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orange liquid
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iodine?
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grey soild
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group severn elements have similar properites becuase? |
they have 7 electrons on their outer shell |
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why do halogens have similar properties? |
because when they react they gain one electron to form a negative ion and stable electronic structure |
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the nearer the outer shell to the nucleus, the? |
easier for an atom to gain one electron |
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the easier it is to gain the electron the more? |
reactive the halogen is |
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what happens when halogens react with alkali metals? |
they form a metal halide like potasium iodide |
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if halogens are bubbled throught solutions of metal halides what are the 2 possile outcomes? |
no reaction or a displacement reaction |
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if electrons are gained what is this known as? |
reduction |
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describe reduction with bromine |
a molecule of bromine gains 2 electrons and becomes 2 bromide electrons. the bromide electron is a negative ion |
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copper compounds are often?
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blue
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iron(!!) compounds are often
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pale green
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iron(!!!) compounds are often
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orange/brown
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iron is used in what process?
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the haber process to make ammonia for fertlisers
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nickel is used for?
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manufacture of margarine to harden oils
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if a transition metal is heated it undergoes?
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thermal decomposition to form a metal oxide and co2
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does the metal carbonate change colour during this?
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yes
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sodium hyrdoxide solution reacts with compounds of each transition metal to form a?
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particular colour
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The addition of sodium hyrdoxide solution identfies? |
the presnece of the tranisiton metal ions in solution |
