Question

define chemical reaction in detail.​

Answer 1

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

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Answer 2

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Any reaction that ends up with chemical change is called chemical reaction. In a chemical reaction generally one or more new substances are created.The new substance have different property from original one. Moreover we cannot recover the starting material from new product by any physical method.

Example :

Hydrogen + Oxygen = water

water have different properties from Hydrogen and oxygen.

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★ properties of chemical reactions :-

• when there is a change in characteristics
• change in temperature
• change in colour
• may/may not produce heat (exothermic-produces heat, endothermic-Cooling)