Question

define four different types of chemical reaction and write down 7 example of each ​

Answer 1

Answer:

Direct Combination

Decomposition

Displacement

Double Displacement

Explanation:

Direct combination or synthesis is a reaction in which two or more substances combine together to form a single substance

C+O2=CO2+Heat

Fe+S=FeS

Decomposition is a reaction is breaking of a compound either into elements or simple compounds such that these products do not recombine to form the original compound. it occurs in the presence of heat or light or even by electric current.

2Hgo=2Hg+O2

2H2O=2H2+O2

Displacement a reaction in which a more active element displace a lest active element from its salt solution

CuSO4+Zn=ZnSO4+Cu

2KI+Cl2=2KCl+I2

Double Displacement or Double Decomposition is a reaction in which two compounds in a solution react to form two new compounds

BaCl2+Na2So4=BaSO4+2NaCl

CuSo4+H2S=CuS+H2SO4

Hope it helped