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Chemistry Tuition Center Singapore – Ionisation Energy   Question Explain why the 1st ionisation energy generally increases across Period 3.   Answer Across the Period, nuclear charge increases due to increase in number of protons. Shielding effect is similar as the valence electrons are in the same quantum shell. Hence, valence electrons are more strongly attracted to the nucleus and therefore more energy is required to remove an electron.   Note As I.E. involves only the removal of valence electron, ‘valence’ must be mentioned when referring to the electron being removed. This explanation can be used to explain the difference in 1st I.E. of elements within the SAME period dexcluding the d-block elements), where the I.E. of the element with the higher prot ...

Hi Students Attached 2015 A level H2 Physics (9646) Paper 1 Answers Please contact me @98639633 if your answers is different from mine.   1 A 11 B 21 C 31 B 2 D 12 A 22 D 32 D 3 C 13 D 23 B 33 B 4 A 14 A 24 B 34 C 5 C 15 A 25 A 35 C                 6 A 16 A 26 B 36 C 7 D 17 C 27 B 37 C 8 C 18 A 28 B 38 A 9 A 19 C 29 D 39 D 10 C 20 B 30 B 40 B

Hi Students Attached is 2015 A Level H2 Chemistry (9647) Paper 1 Answers. Please contact Mr Ong @ 9863 9633 if you answers is different from mine 1 B 11 D 21 B 31 D 2 B 12 C 22 D 32 A 3 C 13 D 23 B 33 C 4 C 14 B 24 A 34 A 5 B 15 D 25 D 35 B                 6 D 16 D 26 D 36 A 7 B 17 A 27 D 37 C 8 C 18 C 28 C 38 C 9 A 19 B 29 B 39 A 10 B 20 A 30 A 40 B

Most of us would know that driving a vehicle, switching on the lights would have a carbon footprint. However, carbon footprint also exists for electronics usage. It’s just that we probably don’t perceive the sending of an e-mail or forwarding of a text message to also leave a carbon footprint. Find out more about how much carbon footprint we leave by reading this article. Perhaps our online activities are not as environmentally friendly as what it appears to be.    For more information on GP Tuition Classes / Secondary English Tuition Classes conducted by Mr Aaron, click here to view his profile and call 96790479 or 98639633 to enquire.

Introduction   In general, Mathematics is a common pre-requisite for many courses in the university   H1 Mathematics is designed to provide students with a foundation in mathematics and statistics that will support their business or social sciences studies at the university. The syllabus aims to equip students with the skills to analyse and interpret data and to make informed decisions.   H2 Mathematics is designed to prepare students for a range of university courses, including mathematics, sciences and related courses, where a good foundation in mathematics is required. It develops mathematical thinking and reasoning skills that are essential for further learning of mathematics. Through the applications of mathematics, students also develop an appreciation of mathematics and its connecti ...