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Category: Physical Chemistry

Methods of Separation of Mixtures

Post author By Hemant More
Post date May 15, 2020
2 Comments on Methods of Separation of Mixtures

Science > Chemistry > Introduction to Chemistry > Methods of Separation of Mixtures In the last article, we have studied the chemical classification of substances. Most of the available substances in nature are in mixture form. The useful component of the mixture can be obtained by separating individual components of the mixture by a suitable […]

Physical Chemistry

Chemical Classification of Substances

Post author By Hemant More
Post date May 15, 2020
No Comments on Chemical Classification of Substances

Science > Chemistry > Introduction to Chemistry > Chemical Classification of Substances In the last article, we have studied the significance of chemistry and its branches. In this article, we shall study the chemical classification of substances. Matter and its Different States: The matter is any substances that have mass and that occupies space. There […]

Tags Bose-Einstein condensate, Chemistry, Compounds, Elements, Gaseous, Heterogeneous mixture, Homogeneous mixture, Liquid, Metalloids, Metals, Mixtures, Nonmetals, Plasma, Pure substances, Solid, States of matter

Physical Chemistry

Significance of the Study of Chemistry

Post author By Hemant More
Post date May 13, 2020
4 Comments on Significance of the Study of Chemistry

Science > Chemistry > Introduction to Chemistry > Significance of the Study of Chemistry In this article, we shall study the meaning of chemistry and its different branches. What is Chemistry? Science word is derived from the Latin word ‘Scientia’ which means ‘to know’. Science has many disciplines, Chemistry is one of them. It is the […]

Tags Analytical chemistry, Biochemistry, Clothing, Energy, Food, Health, Industrial chemistry, Industry, Inorganic chemistry, Medicine, Nuclear chemistry, Organic chemistry, Physical chemistry, Shelter, Significance of chemistry

Physical Chemistry

Oxidation Number or Oxidation State

Post author By Hemant More
Post date April 20, 2020
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Science > Chemistry > Redox Reactions > Oxidation Number or Oxidation State Oxidation Number OR Oxidation State: The donation of electrons is called the oxidation and the gain of electrons is called the reduction. Oxidation and reduction can further be explained by a knowledge of “Oxidation number”. The oxidation state of an atom in its […]

Tags Chemistry, Oxidant, Oxidation, Oxidation number, Oxidation reaction, Oxidation state, Oxidising agent, Reaction, Redox reaction, Reducing agent, Reductant, Reduction, Reduction reaction

Physical Chemistry

Introduction to Redox Reactions

Post author By Hemant More
Post date April 20, 2020
2 Comments on Introduction to Redox Reactions

Science > Chemistry > Redox Reactions > Introduction to Redox Reactions In this article we shall study about redox reactions, in which both the oxidation and reduction reactions take place simultaneously. Oxidation: Old Concept: It is a process in which addition of oxygen takes place. 2Mg + O2 → 2MgO It is a […]

Tags Chemistry, Oxidant, Oxidation, Oxidation number, Oxidation reaction, Oxidation state, Oxidising agent, Reaction, Redox reaction, Reducing agent, Reductant, Reduction, Reduction reaction

Physical Chemistry

Applications of Colloids

Science > Chemistry > Colloids > Applications of Colloids Natural Applications of Colloids: Blue Colour of Sky: When the light is incident on particles whose size is smaller than the wavelength of light, it is scattered. The blue colour of the sky is due to the scattering of light by small particles (dust particles along […]

Physical Chemistry

Emulsions

Science > Chemistry > Colloids > Emulsions A colloidal system in which both the dispersed phase as well as dispersion medium are immiscible or partially miscible liquids is called an emulsion. e.g. Milk, cod liver oil, oil paints, vanishing cream, cold creams, etc. are emulsions. Generally, one of the two liquids is water and the […]

Physical Chemistry

Gels

Post author By Hemant More
Post date April 20, 2020
2 Comments on Gels

Science > Chemistry > Colloids > Gels A gel is a colloidal system in which the dispersed phase is liquid and the dispersion medium is solid. e.g. when warm sol of gelatin is cooled, it sets to a semi-solid mass which is a gel. Jellies, jams, curd, butter, shoe polish, etc. are gels. The interior […]

Physical Chemistry

Coagulation of Colloidal Solution

Post author By Hemant More
Post date April 20, 2020
1 Comment on Coagulation of Colloidal Solution

Science > Chemistry > Colloids > Coagulation of Colloidal Solution The process of precipitation of colloidal particles due to aggregation of the particles is called coagulation or flocculation. Explanation: The presence of the same type of electric charge on colloidal particles causes repulsion and keep them in a suspended state. If by some means, the […]

Physical Chemistry

Electrical Properties of Colloids

Post author By Hemant More
Post date April 20, 2020
3 Comments on Electrical Properties of Colloids

Science > Chemistry > Colloids > Charge on Colloidal Particles The colloidal particles carry an electric charge. The most important property of colloidal solution is that all suspended particles possess either positive or a negative charge. i.e. they carry the same nature of the charge. The mutual forces of repulsion between similarly charged particles prevent […]