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Acids and Bases (National 5 Chemistry)

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  • The products in the picture are examples of everyday....
    Cleaning products
    Salts
    Acids
    Bases
  • An alkaline solution has a higher concentration of hydroxide ions than pure water.
    True
    False
  • All acids contain the positive hydroxide ion (OH-)
    True
    False
  • The formula for calcium hydroxide is
    CaO<sub>2</sub>H<sub>2</sub>
    CaOH
    CaOH<sub>2</sub>
    Ca(OH)<sub>2</sub>
  • The general word equation of the reaction of an acid with a metal is
    metal + acid --&gt; salt + vinegar
    metal + acid --&gt; salt + water
    metal + acid --&gt; salt + carbon dioxide
    metal + acid --&gt; salt + hydrogen
  • In a neutralisation reaction the pH moves....
    towards Glasgow
    towards 7
    towards 14
    towards 1
  • The concentration of a solution of HCl containing 0.1 mol in 50 cm3 of water is
    0.002 mol/l
    2 mol/l
    0.2 mol/l
    0.02 mol/l
  • What is another word for combustion?
    Exothermic
    Melting
    Incinerating
    Burning
  • The net ionic equation of the reaction of an acid with an alkali is
    H<sup>+</sup> + OH<sup>-</sup> --&gt; CO<sub>2</sub>
    H<sup>+</sup> + OH<sup>-</sup> --&gt; H<sub>2</sub>O
    2H<sup>+</sup> + CO<sub>3</sub><sup>2-</sup> --&gt; CO<sub>2</sub> + H<sub>2</sub>O
    2H<sup>+</sup> + OH<sup>-</sup> --&gt; H<sub>2</sub>O
  • The pH of the water is neutral (pH 7) because there...
    are no hydrogen ions
    are no ions at all
    are no hydroxide ions
    is a tiny but equal amount of hydrogen and hydroxide ions
  • Which is the most accurate way of measuring pH?
    pH paper
    electronic pH meter
    Just use your finger
    Indicator
  • When Magnesium oxide neutralises sulphuric acid the salt produced is called..
    magnesium sulphide
    sulphur magneside
    magnesium sulphorous
    magnesium sulphate
  • Non-metal oxides turn the pH of the water acidic, while metal oxides turn it alkaline.
    True
    False
  • calcium hydroxide and phosphoric acid will make calcium phosphate salt. This salt is soluble.
    False
    True
  • What all fruits have in common?
    They all contain bases
    They are full of proteins
    They all contain acid
    They all full of fat
  • Which one is the most alkaline in the pH scale?
    Tomatoes
    Stomach acid
    Oven Cleaner
    Baking soda
  • Acids have a pH less than 7
    True
    False
  • The formula for nitric acid is...
    HCl
    H<sub>2</sub>SO<sub>4</sub>
    HNO<sub>3</sub>
    H<sub>3</sub>PO<sub>4</sub>
  • The number of moles of lithium hydroxide in 500 cm3 of water of 0.1 mol/l solution is
    50 mol
    0.5 mol
    5 mol
    0.05 mol
  • The ionic formula for Magnesium chloride is...
    Mg<sup>+</sup>Cl<sup>-</sup>
    (Mg<sup>+</sup>)<sub>2</sub>Cl<sup>-</sup>
    Mg<sup>2+</sup>(Cl<sup>-</sup>)<sub>2</sub>
    Mg<sup>2+</sup>Cl<sup>-</sup><sub>2</sub>
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