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Molecular Nature of Matter Video Lecture - NEET

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1. What is the molecular nature of matter?
Ans. The molecular nature of matter refers to the understanding that matter is composed of small particles called molecules. These molecules are made up of atoms that are chemically bonded together. Understanding the molecular nature of matter helps explain various physical and chemical properties of substances.
2. How are molecules formed in matter?
Ans. Molecules are formed in matter through chemical bonding between atoms. Atoms can either share or transfer electrons to form chemical bonds. Covalent bonds are formed when atoms share electrons, while ionic bonds are formed when electrons are transferred from one atom to another. These bonds hold the atoms together and form molecules.
3. What are the different states of matter based on molecular nature?
Ans. The three main states of matter based on molecular nature are solid, liquid, and gas. In solids, molecules are tightly packed and arranged in a regular pattern. In liquids, molecules are less tightly packed and can move more freely. In gases, molecules are far apart and move freely in all directions. Plasma is another state of matter where molecules are highly energized and ionized.
4. How does the molecular nature of matter affect physical properties?
Ans. The molecular nature of matter greatly influences its physical properties. For example, the arrangement and bonding of molecules determine the melting and boiling points of a substance. The size and shape of molecules affect the density and compressibility of matter. Additionally, the intermolecular forces between molecules determine properties like viscosity, surface tension, and solubility.
5. How does the molecular nature of matter explain chemical reactions?
Ans. The molecular nature of matter provides a basis for understanding chemical reactions. Chemical reactions involve the breaking and forming of chemical bonds between atoms in molecules. The rearrangement of atoms leads to the formation of new substances with different chemical properties. Understanding the molecular structure and bonding helps predict the products of chemical reactions and explain the underlying mechanisms.
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