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Law of Definite Proportion. Different samples of a pure chemical substance always contains always same proportion of elements by mass. Law Of Multiple Proportions. if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is ...
Oct 11, 2024 · Study with Quizlet and memorize flashcards containing terms like Chemistry, How Many Branches of Chemistry are there?, Organic Chemistry and more.
Study with Quizlet and memorize flashcards containing terms like s-Block Elements, p-Block Elements, d-Block Elements and more.
- Importance of Chemistry. Chemistry has a direct impact on our life and has wide range of applications in different fields. These are given below
- (A) In Agriculture and Food: (i) It has provided chemical fertilizers such as urea, calcium phosphate, sodium nitrate, ammonium phosphate etc. (ii) It has helped to protect the crops from insects and harmful bacteria, by the use ‘ of certain effective insecticides, fungicides and pesticides.
- (B) In Health and Sanitation: (i) It has provided mankind with a large number of life-saving drugs. Today, dysentery and pneumonia are curable due to discovery of sulpha drugs and penicillin life-saving drugs.
- (C) Saving the Environment: The rapid industrialisation all over the world has resulted in lot of pollution. Poisonous gases and chemicals are being constantly released in the atmosphere.
Apr 25, 2024 · You can access the PDF for CBSE Class 11 Chemistry Notes Chapter 1 “Some Basic Concepts of Chemistry” from the link provided below. This PDF covers all the important topics discussed in the chapter, including matter, types of matter, laws of chemical combination, and the concept of the mole.
The NCERT Solutions of Chemistry provided on this page for Class 11 Chapter 1 contains detailed explanations of the steps to be followed while solving the numerical value questions that are frequently asked in the examinations. The subtopics covered in the chapter are listed below.
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Chapter 1 of Class 11 Chemistry establishes crucial concepts that are fundamental for understanding the behaviour of matter and chemical reactions. Mastery of the mole concept, stoichiometry, and basic measurement techniques is essential for solving problems and conducting experiments in chemistry.
