1. Heat Exchange
1.1. Exothermic Reaction
1.2. Endothermic Reaction
2. Redox Reaction
2.1. Oxidation Reaction
2.1.1. Addition Of Oxygen C +O2 → CO2
2.1.2. Removal Of Hydrogen H2S + Br2 → 2 HBr + S
2.1.3. Addition of Electrons Fe + S → FeS
2.1.4. Oxidising Agent Oxidising agent is a substance that brings about oxidation. In the above examples O2, S, Cl2, Br2, and H2O2 are oxidising agents.
2.2. Reducing Agent Reducing agent is a substance that brings about reduction. In the above examples H2, HgCl2 and C are Reducing agents.
2.3. . Removal of oxygen ZnO + C → Zn + CO
2.4. Addition of hydrogen: N2 + 3 H2 → 2NH3
2.5. Removal of electron element 2FeCl3 + H2 → 2FeCl2 + 2HCl
3. Chemical Reaction
3.1. Characterstics
3.1.1. 1) change in state 2) change in color 3) evolution of a gas 4) change in temperature.
3.2. Represented By
3.2.1. 1) Follow the law of conservation of mass 2)Same number of atoms on both sides of the reaction
3.2.2. Chemical Equation
3.2.2.1. Balanced Chemical Equation
3.2.2.2. Unbalanced Chemical Equation
3.2.3. Reactants ------> Products A+B------> C
4. Types of chemical Reaction
4.1. Combination Reaction - A+B----->C
4.2. Decomposition Reaction - A----->B+C
4.2.1. Photolytic Decomposition(In presence of Light)
4.2.2. Thermal Decomposition(In presence of heat)
4.2.3. Electrolytic Decomposition(In the presence of electric current)