(4) periodic table

    Cards (20)

    • Where on the reactivity series would you find copper, the top or the bottom?
      copper is at the bottom
    • Which two non-metals are found in the reactivity series?
      hydrogen and carbon
    • Write a word equation for the oxidation of magnesium to form magnesium oxide.
      magnesium + oxygen --> magnesium oxide
    • Calcium is in group 2 of the Periodic Table. What charge will be on a Calcium ion?
      calcium is a 2+ ion
    • What ion is produced by acids?
      hydrogen ion. H+
    • What is the pH of a neutral solution?
      7 pH
    • True or false alkalis have a pH of more than 7?
      true
    • When an acid reacts with a metal which gas is produced?
      hydrogen
    • Which acid has the formula H2SO4?
      sulfuric acid
    • What ion is produced by all alkalis? 
      hydroxide ion. OH-
    • What is a strong acid?
      a strong acid is an acid which is fully ionised in water
    • The pH of a solution changes from 6 to 4. What happens to the concentration of hydrogen ions?
      it decreases - by a factor of 10 x 10 = 100
    • Define oxidation in terms of electrons.
      oxidation is the loss of electrons
    • Define reduction in terms of electrons
      reduction is the gain of electrons
    • Calcium reacts with hydrochloric acid to form calcium chloride and hydrogen. The equation for this reaction can be split into two ionic equations: 
      Ca → Ca2+ + 2e-​
      2H+ + 2e- → H2​
      Which species is oxidised? Explain your answer.

      calcium (Ca) is oxidised because it loses electrons in the reaction
    • Calcium reacts with hydrochloric acid to form calcium chloride and hydrogen. The equation for this reaction can be split into two ionic equations: 
      Ca → Ca2+ + 2e-​
      2H+ + 2e- → H2​
      Which species is reduced? Explain your answer.
      hydrogen (H) is reduced, it gains electrons
    • What is the general (ionic) equation for neutralisation?
      H+ + OH- --> H2O
    • What do we call the molten ionic compound used in electrolysis?
      the electrolyte
    • Predict the products of the electrolysis of an aqueous solution of sodium bromide. 
      bromine and hydrogen
    • Write down the half equations for the reactions that take place at each of the electrodes in the electrolysis of aqueous sodium bromide. 
      cathode - 2H+ + 2e- --> H2
      anode - 2Br- --> Br2
    See similar decks