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Law of Conservation of Mass Video Lecture - Class 9
FAQs on Law of Conservation of Mass Video Lecture - Class 9
| 1. What is the law of conservation of mass? |  |
Ans. The law of conservation of mass states that in a closed system, mass cannot be created or destroyed, it can only be rearranged or transformed into different forms. This means that the total mass of the substances before a chemical reaction is equal to the total mass of the substances after the reaction.
| 2. How does the law of conservation of mass relate to chemical reactions? | |
Ans. The law of conservation of mass is directly related to chemical reactions. It states that the total mass of the reactants in a chemical reaction is equal to the total mass of the products formed. This means that no atoms are lost or gained during a chemical reaction, only their arrangement is changed.
| 3. Why is the law of conservation of mass important in chemistry? | |
Ans. The law of conservation of mass is important in chemistry because it helps in understanding and predicting the outcome of chemical reactions. It allows scientists to balance chemical equations and determine the mass of reactants and products involved. This law also provides a foundation for stoichiometry, the calculation of quantities of substances in chemical reactions.
| 4. Can the law of conservation of mass be violated? | |
Ans. No, the law of conservation of mass cannot be violated in a closed system. This law is a fundamental principle in chemistry and has been proven through numerous experiments. Any apparent violation of this law can be attributed to errors in measurement or incomplete understanding of a system.
| 5. How is the law of conservation of mass observed in everyday life? | |
Ans. The law of conservation of mass can be observed in various everyday life situations. For example, when wood burns, the mass of the ash and smoke produced is equal to the mass of the wood before burning. Similarly, when a candle burns, the total mass of the wax and the oxygen consumed is equal to the mass of the products formed. This law also applies to cooking, where the mass of the ingredients in a recipe remains constant after cooking.
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Dec 14, 2024 Last updated |
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