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Chemistry Form 4

INTRODUCTION All the objects that exist around us are made up of chemical substances. These objects exist an element, compound or mixture. All these objects contribute benefit to human kind. As time goes on, human has done many researches to ensure all these chemical substances will be enough for the use of themselves. Chapter 9 of Form 4 syllabus introduces the students with manufactured substances in industry. This is important for the students to appreciate the knowledge of chemistry that is still new for themselves. Personally, I think that this chapter is an interesting chapter as it revealed the way of scientist produces the material around me. It also gives me new knowledges of the uses of chemical substances that…