Greendale 6092/02 Chem Paper 2 QNs Prelim 2024

1 GREENDALE SECONDARY SCHOOL Preliminary Examination 2024 STUDENT NAME CLASS 4 TEACHING GROUP REG. NO CHEMISTRY Paper 2 Student answer on the Question Paper. No Additional Materials are Required. 6092/02 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your name, class, teaching group and register number in the spaces provided above. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. The number of marks is given in brackets [ ] at the end of each question or part question. A copy of the Periodic Table is printed on page 32. The use of an approved scientific calculator is expected, where appropriate. This document consists of 32 printed pages. [Turn over

2 Section A Answer all questions. 1 Two chloride salts, iron(II) chloride and lead(II) chloride are made from the same acid but different preparation methods. (a) Complete Table 1.1, in identifying the reactants to prepare iron(II) chloride and lead(II) chloride salts. Table 1.1 salt reactants acid other reactant iron(II) chloride ………………..………………….. iron(II) carbonate lead(II) chloride ………………………………… [2] (b) Use Table 1.1 to name the resulting solution formed during the preparation of lead(II) chloride salt. solution formed: ……………………………………………….…………………….. [1] (c) While preparing iron(II) chloride, a student added one of the reactants in excess. Use Table 1.1 to identify which reactant must be added in excess for the preparation of iron(II) chloride. Explain your reasoning. …….………………………………………………………………………………………. ……..…………………………………………………………………………………… [1] [Total: 4]

3 2 (a) Fig. 2.1 shows the structure of compound A. Fig. 2.1 Compound A can be polymerised. Draw two repeating units of the polymer formed when compound A is polymerised. [1] (b) Poly(ethene) is an example of a polymer that can be recycled. Describe one physical method and one chemical method used to recycle this polymer. physical method ..................................................................................................... ................................................................................................................................ chemical method .................................................................................................... ................................................................................................................................ [2]

4 (c) (i) Fig. 2.2 shows two monomers that react together to produce a polymer. monomer 1 monomer 2 Fig. 2.2 Draw the structure of the repeating unit of the polymer produced from monomers 1 and 2.