1) When group 1 elements react they a) Gain an electron b) Form negative ions c) Lose an electron d) Form positive ions 2) The formula for lithium oxide a) LiO b) Li2O c) LiO2 d) 2LiO 3) H2O is  a) Ionic b) Giant covalent c) Simple molecular 4) The number of elements in Mg(OH)2 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 5) The number of atoms in Mg(OH)2 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 6) Use the formula for sulphuric acid (H2SO4)to derive the charge on the sulphate ion a) SO4- b) SO4+ c) SO42- d) SO42+ 7) One mole of CO2 contains a) 6.02 x 10-23 molecules of CO2 b) 6.02 x 1023 carbon atoms c) 6.02 x 1023 molecules of CO2 d) 6.022 x 1023 oxygen atoms e) 2 x (6.022 x 1023) oxygen atoms f) 2 x (6.022 x 1023) carbon atoms 8) 2H2 + O2 → 2H2O  a) One mole of H2 reacts with one mole of O2 to form one mole of H2O b) Two moles of H2 react with two moles of O2 to form two moles of H2O c) Two moles of H2 react with one mole of O2 to form two moles of H2O 9) Oxidation is a) Gain of electrons b) Loss of oxygen c) Loss of electrons d) Gain of oxygen 10) Iron oxide + carbon → Iron and carbon dioxide a) Iron oxide is oxidised b) Iron oxide is reduced c) Carbon is reduced d) Carbon is oxidised 11) Iron oxide + carbon → Iron and carbon dioxide a) Iron is a reducing agent b) Iron is an oxidising agent c) Carbon is a reducing agent d) Carbon is an oxidising agent

Fundamentals in chemistry

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