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Chemical equation and reaction extra question - Class 10 PDF Download

By Gopi Prasad

Chapter 1 – Chemical Reactions and Equations

Chemical equation and reaction extra question - Class 10Chemical equation and reaction extra question - Class 10Chemical equation and reaction extra question - Class 10Chemical equation and reaction extra question - Class 10Chemical equation and reaction extra question - Class 10Chemical equation and reaction extra question - Class 10

 

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FAQs on Chemical equation and reaction extra question - Class 10

1. What is a chemical equation?
2. How can we balance a chemical equation?
Ans. To balance a chemical equation, we need to ensure that the number of atoms of each element on both sides of the equation is equal. This can be achieved by adjusting the stoichiometric coefficients. The process involves trial and error, starting with the most complex molecules and adjusting the coefficients until the equation is balanced.
3. What is a chemical reaction?
Ans. A chemical reaction is a process in which one or more substances undergo a chemical change to form new substances. It involves the breaking and forming of chemical bonds, resulting in the rearrangement of atoms. Chemical reactions can be classified into various types, such as synthesis, decomposition, combustion, and displacement reactions.
4. What are the types of chemical reactions?
Ans. There are several types of chemical reactions, including: - Synthesis reaction: Two or more substances combine to form a new compound. - Decomposition reaction: A compound breaks down into simpler substances. - Combustion reaction: A substance reacts with oxygen, usually producing heat and light. - Displacement reaction: An element displaces another element in a compound. - Acid-base reaction: An acid reacts with a base to form a salt and water.
5. Why are chemical equations important?
Ans. Chemical equations are important because they provide a concise and systematic way to represent chemical reactions. They allow us to understand the stoichiometry of a reaction, including the relative amounts of reactants and products. Chemical equations also help in predicting the outcome of reactions, balancing equations, and calculating the quantities of substances involved in a reaction.
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