The periodic law

No specific sources required Subject Chemistry Topic the periodic law Using your textbook (chapter 125 – 129 ), write a short essay (one page long, font: 11 – 800 words) about the discovery of the periodic and properties of the main groups in this table. Your essay should include all of the following key points: – How do chemical reactions occur? – Brief history on the contribution of different scientists for the development of the periodic table. – The genius work of Mendeleev in his discovery of the modern periodic table. – A description on how elements are arranged in the periodic table by groups and periods. – Description of the unique properties of group 1 in the periodic table (alkali metals). – Description of the unique properties of group 17 in the periodic table (halogens). – Description of the unique properties of group 18 of the periodic table (noble gases). Rules about writing a scientific essay: *Keep sentences or phrasing short, break compound sentences into simpler sentences, and remove any “unnecessary” words. *Use the present tense. *Use a few adjectives and adverbs and keep the text short and easy to understand. Structure of your essay: *Introduction about the history of the periodic table. *Body: 5 paragraphs to discuss the other 5 key points in the main question. *Conclusion: summarize the entire essay. VERY IMPORTANT NOTE:- please make sure that all the information used to make this essay is specifically found from pages 125-129 in chapter five of the high school chemistry book that is in the following link… thank you, and Goodluck!