In this post, you will find the “difference between” questions which are asked in your exams for Class 9-12. These questions are designed to test your understanding and knowledge of various concepts. By comparing and contrasting different ideas, you will be able to develop a deeper understanding of the subject matter. Additionally, answering these questions […]
Ultimate ‘Difference Between’ Questions Guide for Class 9-12 Read More »
In this post, question answer of structure of atom are provided which includes NCERT questions as well. 1. What are canal rays? Answer: Canal rays are positively charged radiations which led to the discovery of positively charged sub-atomic particle called proton. 2. If an atom contains one electron and one proton, will it carry any charge
Structure of Atom: 78 Must-Know Q&A Read More »
In this post, questions and answers of atoms and molecules are provided which includes NCERT questions as well. 1. In a reaction 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations
Atoms and Molecules: 75 Must-Know Q&A Read More »
In this post you will learn about valence electrons and valency, isotopes, isobars and fractional atomic masses of certain elements. What are valance electrons? The electrons in the outermost shell of an atom take part in all the chemical reactions given by that element. Thus, these electrons describe the combining capacity or valency of an
Valence Electrons and Valency: The Complete Guide! Read More »
In this post we will discuss about Bohr’s model of an atom, Bohr-Bury scheme, how to write electronic configuration of an element and nuclear composition. Rutherford’s nuclear model of atom, although a great contribution to the science, could not explain certain observations. A brilliant description of atomic structure was proposed by Neil Bohr in 1913.
Everything about Bohr’s Model of An Atom Read More »
In this post we will discuss about Rutherford and Thomson Model of an atom. After the discovery of electrons and protons, Sir J.J. Thomson proposed the atomic model. This is described below. What is J J Thomson Model of the atom? In 1898, Sir J J Thomson proposed a model of the atom. This model
Rutherford’s Alpha Scattering Experiment – Concept, Results & Importance! Read More »
This post includes the topics of Class 9 Chapter 4 Structure of Atom, i.e., Cathode rays and the JJ Thomson model and the discovery of electron. Atoms are too small to be seen even with the most powerful microscope and, too light to be weighed even on the most sensitive balance. In this chapter, we
Cathode Rays and Discovery of Electron: Key Idea Read More »
