Metal oxides

Cards (43)

  • Metal compound inside it's rock is it's
    Ore
  • Metals are arranged inorder of
    Reactivity
  • Which metals do not react when in contact with water
    Copper, sliver,gold
  • Potassium, sodium,lithium, calcium
    React violently
  • When metals react they form
    Positive ions
  • Metals above carbon must be
    Extracted using electrolysis
  • Oxidation is
    Loss of electrons
  • reduction is
    Gain of electrons
  • 2 non-metals in the reactivity series are
    Carbon and hydrogen
  • Gold is an
    Unreactive metal
  • Reactions between metals and metals and acids occur if the metal is
    More reactive than the hydrogen in the acid
  • If a metal is too reactive
    The reaction is violent
  • Why should non-metals like sodium not be used in an experiment at school
    Because they are too reactive and dangerous as it may explode
  • In the reaction between hydrogen and hydrochloric acid
    The hydrogen ions are displaced by magnesium because magnesium is more reactive than hydrogen
  • Acids are neutralised by alkali and base to 

    Produce salts,water,metal carbonate, carbon dioxide
  • Salts are made from
    Positive ions and a negative ion from the acid
  • Indicators are substances which change the colour when added to acids
  • Litmus goes red in
    Acid
  • Litmus goes blue in
    Alkali
  • What tells pH
    Universal indicator
  • How many dyes is universal indicators
    Many
  • Scale of universal indicators is from
    0 to 14
  • In the scale 0 is most acidic
  • In a scale what is most alkaline
    14
  • In a scale 7 is
    Alkaline
  • What solutions have a pH of less than 7
    Aqueous
  • What is used to record the change of pH over time
    PH meter
  • Acids also produce hydrogen ions
  • Alkalis also produce
    Hydroxide ions
  • In neutralisation between acid and alkali ions react with hydroxide ions
    To produce water
  • In a reaction an acid
    Ionises completely
  • A weak acid
    Partially ionises in aqueous solution
  • Examples of weak acid are
    Ethanol,citric,carbonic
  • Citric acid is a
    Weak acid
  • Carbonic acid is a
    Weak acid
  • Hydrochloric acid is
    A strong acid
  • Nitric acid is a strong acid
  •  ethanoic acid is a weak acid
  • Sulfuric acid is a
    Strong acid
  • A weak acid has a lower what compared to a strong acid with the same concentration
    pH