![]() With our affordable courses like Lakshya, Udaan and Arjuna and many others, we have been able to provide a platform for lakhs of aspirants.įrom providing Chemistry, Maths, Physics formula to giving e-books of eminent authors like RD Sharma, RS Aggarwal and Lakhmir Singh, PW focuses on every single student's need for preparation. Physics Wallah's main focus is to make the learning experience as economical as possible for all students. We believe in empowering every single student who couldn’t dream of a good career in engineering and medical field earlier. ![]() ![]() PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We successfully provide students with intensive courses by India's top faculties and personal mentors. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app. We also provide extensive NCERT solutions, sample papers, NEET, JEE Mains, BITSAT previous year papers, which makes us a one-stop solution for all resources. Physics Wallah is India's top online ed-tech platform that provides affordable and comprehensive learning experience to students of classes 6 to 12 and those preparing for JEE and NEET exams. The number and kind of atoms in a given compound is fixed.ĭuring chemical combination, atoms of different elements combine in small whole numbers to form compounds.Ītoms of the same elements can combine in more than one ratio to form more than one compound. There are as many kinds of atoms as are elements.Īll the atoms of given element are identical in every respect, having the same mass, size and chemical properties.Ītoms of different elements differ in mass, size and chemical properties.Ĭhemical combination between two (or more) elements consist of the joining together of atoms of chemical elements to form molecules of compounds. According to Dalton’s atomic theory all matter, whether an element, a compound or a mixture is composed of small particles called atoms.Īll the matter is made up of very small particles called “atoms”.Ītoms can neither be created nor be destroyed.Ītoms are of various kinds. His theory provided an explanation for the law of conservation of mass and the law of definite proportion. The theory is based on certain postulates called postulates (or assumptions) of Dalton’s atomic theory. Dalton picked up the idea of divisibility of matter, which was till then just a theoretical idea. This led John Dalton to put forward a theory in 1808 about the nature of matter. After the above two laws of chemical combination were put forward, the next problem faced by scientist was to give appropriate explanation of these laws.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |