In this post, you will get notes of periodic classification of elements chapter. Dobereiner’s Triads Dobereiner’s found that when elements are arranged into groups of three in the order of their increasing atomic mass, the atomic mass of the element; which comes in the middle, is the arithmetic mean of rest of the two. He […]
Periodic Classification of Elements: Short Notes | Class 10 Chemistry Read More »
Carbon and its Compounds questions and answers are provided in this post including NCERT questions. 1. What would be the electron dot structure of carbon dioxide which has the formula CO2? Answer: The electron dot structure of carbon dioxide molecule is as: 2. What would be electron dot structure of sulphur which is made up
Carbon and its Compounds Question and Answer | Class 10 Chemistry Read More »
In this post, you will study, how to master log and antilog values of a given number. Explanation is provided using examples. Logarithms and Antilogarithms In higher classes, many times we encounter such numbers which are either too big or too small. So, to make the calculations easy and time saving, we use logarithms form
Master Log and Antilog: The Easiest Way to Find Values! Read More »
Here you will find the short notes of carbon and its compound. Carbon is an important constituent of the foods, fuels, household and commercial articles, textile fabrics, perfumes, explosives, dyes, war gases etc. The Earth’s crust has only 0.02% carbon in the form of minerals (like petroleum, coal, carbonates and hydrogen carbonates) and the atmosphere
Carbon and its Compound: Short Notes | Class 10 Chemistry Read More »
Metal and Non-metal question answer are provided in this post including NCERT questions also. 1. Give an example of a metal which :(i) is a liquid at room temperature.(ii) can be easily cut with a knife.(iii) is the best conductor of heat.(iv) is a poor conductor of heat. Answer: (i) Mercury(ii) Sodium(iii) Silver(iv) Lead 2.
Metal and Non-metal Question and Answer | Class 10 Chemistry Read More »
The short notes for the chapter Metals and Non-metals are as follows: Metals and Non Metals There are 92 well known naturally occurring minerals of which 70 are metals and rest 20 are the non-metals. Physical Properties of Metals and Non Metals Property Metals Non-Metals Luster They have shining surface. They do not have shining
Metals and Non metals Notes | Class 10 Chemistry 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 »
Acids Bases and Salts question answers are provided in this post including NCERT questions also. 1. You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify
Acids Bases and Salts Question and Answer | Class 10 Chemistry 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 »
