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Atoms and Molecules - 1 Video Lecture | Science Class 9

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FAQs on Atoms and Molecules - 1 Video Lecture - Science Class 9

1. What is an atom?
Ans. An atom is the smallest unit of matter that retains the chemical properties of an element. It consists of a nucleus, which contains positively charged protons and uncharged neutrons, surrounded by negatively charged electrons.
2. What is a molecule?
Ans. A molecule is a group of two or more atoms held together by chemical bonds. It is the smallest unit of a compound that retains the chemical properties of that compound. Molecules can be made up of atoms of the same element or different elements.
3. How are atoms and molecules related?
Ans. Atoms are the building blocks of molecules. Molecules are formed when atoms combine together through chemical bonds. The combination and arrangement of atoms determine the properties and behavior of molecules.
4. How do atoms and molecules differ from each other?
Ans. Atoms are the individual particles that make up elements, while molecules are made up of atoms. Atoms are neutral, containing equal numbers of protons and electrons, while molecules can be neutral or charged depending on the presence of extra electrons or missing electrons.
5. Why are atoms and molecules important in chemistry?
Ans. Atoms and molecules are fundamental to chemistry as they are the basis for understanding chemical reactions and the properties of matter. By studying atoms and molecules, chemists can explain the behavior and interactions of substances, and develop new materials and compounds with specific properties.
80 videos|352 docs|97 tests
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