How Soap perform cleansing action?
Soaps and detergents perform the cleaning action because the polar parts of their molecules are water soluble due to hydrogen-bonding and non-polar parts remain outside water.
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Liquids & Solids State concepts are essential to learning for every level in chemistry courses. Here, we have compiled many Liquids & Solids State quizzes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical…
Absolute Zero
Following statement of Charles’ law helps to derive absolute zero of temperature. “At constant pressure the volume of a given mass of an ideal gas increases or decreases by 1/273 of its original volume at 0°C for every 1°C rise or fall in temperature respectively.” ABSOLUTE ZERO TEMPERATURE Definition: The temperature at which volume of…
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Geometrical Shape Crystalline Solids Due to definite and orderly arrangement of atoms, ions or molecules in three-dimensional space, all the crystalline solids have a definite, distinctive geometrical shape. For a given crystal, the interfacial angles, at which the surfaces intersect, are always the same no matter in which shape they are grown. The faces and…
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Molar Volume of a Gas Definition
The volume of one mole of an ideal gas at standard temperature and pressure is called molar volume of a gas and is equal to 22.414 dm3 at STP (Standard temperature & pressure) & 24 dm3 at RTP (Room temperature & pressure). Explanation: At standard temperature and pressure: 2 g of hydrogen (H2) = 1…
