Chemical reaction and equation

1. Example of chemical reaction

1.1. 2Mg+O2---->2MgO

1.2. 2CaO+ 2H2O -----> 2Ca(OH)2

1.3. Ca(OH)2 + CO2 -----> CaCO3+ H2O

2. Endothermic Reaction

2.1. Absorption of Heat

2.2. Ex- CO2 + H2O + sunlight -----> C6H12O6+ O2 + H2O

3. Exothermic Reaction

3.1. Heat release

3.2. Ex- CaO + H2O -----> Ca(OH)2 + Heat + Energy

4. Oxidation

4.1. Addition of Oxygen OR

4.2. Removal of Hydrogen

5. Reduction

5.1. Addition of Hydrogen OR

5.2. Removal of Oxygen

6. Ex-

6.1. Reactant - Mg+O2

6.2. Product - MgO

7. Balance chemical equation -

7.1. 2Mg+O2 ----> 2MgO

8. Unbalance chemical equation -

8.1. MgO+O2 ----> MgO

9. Character of chemical reaction

9.1. Evolution of gas

9.2. Formation of precipitate

9.3. Change in colour

9.4. Change in temperature

9.5. Change in state

10. Type of chemical reaction

10.1. Combination Reaction

10.1.1. Ex- Mg +O2 ----> MgO

10.2. Decomposition Reaction

10.2.1. Ex- AgCl + sunlight----> Ag+ Cl

10.3. Displacement reaction

10.3.1. Ex- CuSO4 + Zn ----> ZnSO4 + Cu

10.4. Double Displacement Reaction

10.4.1. Ex- AgNO3+ NaCl ---- >AgCl + NaNO3