2022 RVHS JC2 H2 CM Prelim P1 (QP)

River Valley High School 9729/01/PRELIMS/22 2022 Preliminary Examination [Turn over RIVER VALLEY HIGH SCHOOL JC 2 PRELIMINARY EXAMINATION CANDIDATE NAME CLASS 2 1 J CENTRE NUMBER S INDEX NUMBER H2 CHEMISTRY 9729/01 Paper 1 Multiple Choice 22 September 2022 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class, centre number and index number on the Answer Sheet in the spaces provided. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 16 printed pages.

2 River Valley High School 9729/01/PRELIMS/22 2022 Preliminary Examination 1 Which particle has more protons than electrons and more protons than neutrons? (D = 𝐻1 2 ) A NO2+ B ND2H C NDH− D ND3H+ 2 Which particle would, on gaining an electron, have a half-filled subshell? A V− B N C Se+ D Ti 3 The first six ionisation energies (I.E.) of a Period 3 element, M, in kJ mol −1 are shown. 1st 2nd 3rd 4th 5th 6th I.E./ kJ mol−1 1012 1907 2914 4964 6274 21267 Which equations show the formation of the chloride of M? 1 M + 2Cl2 → MCl4 2 2M + 3Cl2 → 2MCl3 3 2M + 5Cl2 → 2MCl5 A 1 and 3 only B 2 and 3 only C 1 only D 2 only 4 The boiling point of water (100 C) is greater than that of HF (20 C). Which statement is a correct explanation of this? A The H2O molecule has a larger net dipole moment than the HF molecule. B Each hydrogen bond formed between H 2O molecules is stronger than that formed between HF molecules. C There are more electrons in a H2O molecule than there are in a HF molecule, so the instantaneous dipole-induced dipole interactions are stronger in H2O. D On average, there are two hydrogen bonds between H 2O molecules compared to one hydrogen bond between HF molecules.

3 River Valley High School 9729/01/PRELIMS/22 2022 Preliminary Examination [Turn over 5 Which molecule contains a dative bond? A BF3 B NO C CO D SiO2 6 Which gas shows the greatest deviation from ideality? A CH4 B SO3 C C2H2 D CO2 7 When a sample of gas is compressed at constant temperature from 20 atm to 80 atm, its volume changes from 67.0 cm3 to 15.5 cm3. Which of the following is not a possible explanation of this behaviour? A Gas is adsorbed onto the vessel walls. B Gas begins to liquefy at 80 atm. C The gas dissociates. D T