Pearson Edexcel International GCSE (9–1), Chemistry Science (Double Award) 4SD0 PAPER 1C. 100% proven pass rate.

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Answer ALL questions. 1 The box shows the names of some substances. bromine carbon dioxide copper iodine methane nitrogen sulfur dioxide water (a) Complete the table by choosing substances from th... e box that match the description. Each substance may be used once, more than once or not at all. (5) Description Substance a good conductor of electricity an element that has a basic oxide a substance used as a fuel a major cause of acid rain a non‑metallic element that is a solid at room temperature (b) Describe a test for carbon dioxide. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 1 = 7 marks) http://britishstudentroom.wordpress.com/4 *P66056A0428* 2 (a) Table 1 gives some information about three subatomic particles. (i) Complete Table 1 by giving the missing information. (3) Subatomic particle Relative mass Relative charge electron 0.0005 proton +1 neutron 1 Table 1 (ii) Give the name of the part of the atom containing protons and neutrons. (1) .................................................................................................................................................................................................................................................................................... (b) Table 2 shows the numbers of protons, neutrons and electrons in the species U, V, W, X, Y and Z. Species Number of protons Number of neutrons Number of electrons U 8 10 8 V 9 10 10 W 11 12 10 X 11 12 11 Y 12 12 12 Z 12 13 12 Table 2 http://britishstudentroom.wordpress.com/*P66056A0528* Turn over 5 Use the information in Table 2 to answer these questions. Each species may be used once, more than once or not at all. (i) Give the letter of the species that has six electrons in its outer shell. (1) .................................................................................................................................................................................................................................................................................... (ii) Give the mass number of Z. (1) .................................................................................................................................................................................................................................................................................... (iii) Give the letter of the species that is a positive ion. (1) .................................................................................................................................................................................................................................................................................... (iv) Give the letters of the two species that are isotopes of the same element. (1) .................................................................................................................................................................................................................................................................................... (c) A sample of neon contains two isotopes, 20Ne and 22Ne The relative abundances of the two isotopes in the sample are 20Ne 91.2% 22Ne 8.80% Calculate the relative atomic mass of this sample of neon. Give your answer to one decimal place. (3 [Show More]

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