DISCOVERY OF ELECTRONS • Hundred years ago, amidst glowing glass tubes and the hum of electricity, the British physicist J.J Thomson. was venturing into the interior of…

1. CHAPTER - 4 STRUCTURE OF THE ATOM 2.   3. 1a)Charged particles in matter:- Atoms have three types of sub atomic particles. They are electrons, protons and neutrons.Electrons…

1. ATOMIC STRUCTURE -: made easy:-by M.,Anwar SohailBachelor of Science and Education Master of Science (Organic Chemistry) CHEMISTRY EDUCATORPelham High08/19/12Mr. Sohails1…

1.HISTORY, MODELS AND SUBATOMIC PARTICLES The Atom 2. History of the Atom Speculations of what matter is made up was prominent in Ancient Greece. They thought matter was…

1.Mr. Rumwald Leo G. Lecaros School of Chemical Engineering and Chemistry Mapua Institute of Technology 1 2. 1) Dalton’s Atomic Theory 2) Atoms and Molecules 3) Structure…

1. In 1900, J. J. Thomson discovered the presence ofthe negatively charged particles called electronsin the atom.In 1886, E. Goldstein discovered new radiations ingas discharge…

Holiday Homework (2014 -15) Holiday Homework (2014 -15) MCQs Practical Questions based on following lessons: Atoms and Molecules. (Chemistry) Structure of Atom. (Chemistry)…

WELCOME STRUCTURE OF THE ATOM Atoms have three types of sub atomic particles. They are electrons, protons and neutrons. Electrons are negatively charged (e-), protons are…

Atomic Model Timeline 400BC Democritus Democritus found that atoms are not all the same, they are eternal, and always moving. He made a theory on this to explain why and…

By Aaradhya Learning Standards Atomic Structure Broad Concept: Atomic models are used to explain atoms and help us understand the interaction of elements and compounds observed…