Question

Write down the types of chemical reaction along with example.

Answer 1

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Combination chemical reactions

In combination reactions, two or more reactants form one product. The reaction of sodium and chlorine to form sodium chloride,

2Na+Cl2--->2NaCl

and the burning of coal (carbon) to give carbon dioxide,

Decomposition chemical reactions

Decomposition reactions are really the opposite of combination reactions. In decomposition reactions, a single compound breaks down into two or more simpler substances (elements and/or compounds).

The decomposition of water into hydrogen and oxygen gases,and the decomposition of hydrogen peroxide to form oxygen gas and water,

2H2O--->2H2+O2

Single displacement chemical reactions

In single displacement reactions, a more active element displaces (kicks out) another less active element from a compound. For example, if you put a piece of zinc metal into a copper(II) sulfate solution, the zinc displaces the copper, as shown in this equation:-

Zn+CuSo4--->ZnSo4

Precipitation reactions

If you mix a solution of potassium chloride and a solution of silver nitrate, a white insoluble solid is formed in the resulting solution. The formation of an insoluble solid in a solution is called precipitation.

Here is the molecular equation for this double-displacement reaction:

KCl+AgNo3--->AgCl+KNo3

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Answer 2

Answer:

types of chemical reactions

Explanation:

1.direct combination or synthesis

1. C+O2 gives CO2+ heat

2.decomposition

1. 2H2O gives 2H2+O2

3.displacement

1. Mg+H2SO4 gives MgSO4+H2

4.double displacement

1. CuSO4+H2S givesCuS + H2SO4

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