1. The document describes different types of chemical reactions including combination reactions, decomposition reactions, displacement reactions, and redox reactions. 2. Combination reactions involve two or more substances combining to form a single new substance. Decomposition reactions involve a compound breaking down into simpler substances. 3. Displacement reactions involve a more reactive metal displacing a less reactive metal from its salt solution. Redox reactions involve both oxidation and reduction reactions occurring simultaneously.

1. Types Of Chemical
Reaction
Submitted by: Anish{leader}, Gaurav-D, Prince, Sahil,
Shivam, Ankit-G, Ashish-Y
Submitted to: Mrs. Poonam Dhingra Mam
Class: X ‘A’
School: Lady Florence Public School

3. Types Of
Chemical
Reaction

4. Reactions in which two or
more substances combine to
form single new substance is
called combination reaction.

5. It is of three types:
 Combination of two elements
 Combination of an element & a compound
 Combination of two compounds

6. 1. 2Sb + 3 Cl2  2SbCl3
2. 2Mg + O2  2MgO
Na
ClNa
Cl
3. 2Na + Cl2  2NaCl

ClNa
Na
Cl

7.  2NaCl + 3O2  2NaClO3
 CO + 4H2  CH3OH
 2SO2 + O2  2SO3

8. Ca(NO3)2 KNO3 Ca(OH)2KOH+ +2 2
KOH + HNO3 KNO3 + H2O

9. Reactions in which a compound
breaks down into two or more
simpler substances are
known as decomposition

10. It is of three types:
 Thermal Decomposition reaction
 Photo Decomposition reaction
 Electrolytic decomposition reaction

11. Reactions in which heat is
supplied to complete the
reaction is called thermal
decomposition reaction.
CaCO3 CaO + CO2
Calcium Carbonate Calcium Oxide Carbon Dioxide
D

12. Reactions in which light is
supplied to complete the
reaction is called photo
decomposition reaction.
2AgBr light 2Ag + Br2
Silver bromide Silver Metal Bromide Gas

13. Reactions in which electricity is
supplied to complete the
reaction is called electrolytic
decomposition reaction.
2H2O(l) electricity 2H2(g) + O2(g)
Water Hydrogen Oxygen

15. Reactions in which a highly
reactive metal displaces a
less reactive metal from its
salt solution is called

16. Mg + CuSO4  MgSO4 + Cu
Here Magnesium (Mg) has displaced
Copper (Cu) from its salt solution.

17. Reactions in which two
compounds react by an
exchange of ions to form two
new compounds is called

18. CaCO3 + 2HCl  CaCl2 + H2CO3
Here change of ions took place for
formation of 2 new compounds

19. Redox is formed by
combination of 2 words i.,e.
oxidation & reduction.Gain of oxygen or removal of hydrogen is called oxidation reaction,
OR
Gain of hydrogen or removal of oxygen is called reduction reaction.

20. CuO + H2 Cu + H2O
Reduction
Oxidation
This is an example of
redox reaction