Manufactured substances in industry

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Hello everyone, Im sure that all of you happy right now. you just end your chemistry topic in Form 4. In this topic, you will learn about sulphuric acid, ammonia, alloy, polymer and glass, and ceramides. If you need more explanation on this topic, just click the links below. Good luck with your Form 5 next year!

http://spmchemistry.blog.onlinetuition.com.my/2012/09/spm-form-4-chemistry-chapter-9-manufactured-substances-in-industry.html

https://www.slideshare.net/faridahhamat/chapter-9-manufacture-substances

https://idoc.pub/documents/chemistry-spm-form-4-short-notes-chapter-9-manufactured-substances-in-industry-34m75yrvpo46