O Level Chemistry Practice Questions
Chemistry Practice Questions (No answers will be given) 1. Zinc chloride can be removed by reacting it with sodium carbonate. ZnCl 2 (aq) + Na 2 CO 3 (aq) --> ZnCO 3 (s) + 2NaCl (aq) (a) State the name for this type of reaction. (b) Construct an ionic equation for the above reaction. (c) Suggest how zinc carbonate can be removed from the mixture. 2. Lithium, atomic number 3, is an element in Group I. (a) Describe what you observe when a small piece of lithium is added...