Question

explain the chemical reactions wiyh example

Answer 1

HOLA

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Reaction between two or more substance is called chemical reaction

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Example -- When magnesium ribbon is burned we get magnesium oxide

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Example -- Respiration an exothermic reaction

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HOPE U UNDERSTAND ☺☺☺

Answer 2

there are 4 major types of reaction

1. Combination reaction:

In combination reaction two reactants combine to give one new product.

ex : mg+O2---> mgO

2. Decomposition reaction:-

In decomposition reaction the single reactant decomposes to give two or more elements or new compound.

ex: h2O---electrolysis--> h2+O2

3. Displacement reaction:-

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reaction.

Ex : Fe+CuSO4-----> feSO4+ Cu

4. Double Displacement reaction:

A Double displacement reaction , also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react , and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.

ex: Na2SO4 + BaCl ----> BaSO4 + NaCl

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