Intermolecular Force
Intermolecular Force: Intermolecular Force is the force of attraction between the atoms or molecules of a matter. Intermolecular Space: Matter is not continuous it is rather discrete i.e. like space filled with balls. It is aggregation of molecules in such a way that there exists certain inter scapes between the molecules. This is why when we apply pressure to a body or it’s temperature is decreased the volume of the body diminish , Due to the applied pressure of decrease in temperature the intermolecular space decreases and the volume...
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Atomic Mass: The mass of a atom of an element is called the atomic mass of that element. Atoms are infinitesimally small. Both the actual size and the mass of an atom are actually so small that they are beyond our common sense of conception. This is obvious when we realise that there are atoms in 1 gram of hydrogen or in other word the mass of a hydrogen atom , which is the lightest atom of all atoms , is gram. Uranium atom is 238.5 times heavier than that of hydrogen atom and the masses of other neutrally occurring common atoms falls under...
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Prerequisites: Prior to studying the topic atoms and molecules it is a must to study : Element compound & mixture Atoms and Molecules: Every matter is regarded as being composed of minute particles. Every matter weather solid , liquid or gas is constituted of large numbers of very tiny particles called Molecules , meaning “Little Mass”. Every molecule in a matter are identical to each other and have same properties. The group of this molecules makes the matter. To understand the concept of the molecules let us consider an...
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Division of matter: The various forms of matter are divided into main two classes : Elements and Compounds & a third class mixture can also be added in the list. Whatever matter of found in nature or around us it is either element , compound or mixture. Elements: An element is substance which can neither be split up into two or more similar substances nor it can be built up from any other simpler matter by any known chemical process. We can say a substance is in it’s elemental form of matter if it consists of atoms having...
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States of Matter: Physically matter exists in three states. They are : solid , liquid and the gaseous sates. Many times Liquid and gaseous states are also collectively called fluid state. Solid substances are rigid , possess a definite shape and their volume varies very less with the variance or change in temperature and pressure. Or , solids have a fixed shape , size and volume. Liquids are slightly compressible and for practical purpose have a definite volume. But liquids don’t have any fixed shape , They take the shape of the...
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