TYPES OF CHEMICAL REACTIONS. FOR CLASS - 8,9 &10 SUBJECT -CHEMISTRY. ANY BOARD

1. TYPES OF CHEMICAL
REACTIONS

4. WHAT IS A CHEMICAL REACTION?
• The chemical process when one or more substance undergoes a change to
produce new substances having different properties.
• A + B  C + D
• 𝑐 + 𝑜2 → 𝑐𝑜2
• 𝑀𝑔 + 𝑂2 → 𝑀𝑔𝑂
• Substances on the left hand side are Reactants.
• Substances on right side are called products.

6. COMBINATION/ADDITION
REACTION
DISPLACEMENT/SUB
STITUTION
REACTION
REDOX REACTIONDOUBLE DISPLACEMENT REACTION
DECOMPOSITION
REACTION

7. •When two or more reactants combine
together to produce a single new
substance(product)
• A + B  AB

11. • The type of chemical when a reactant breaks to give many products.
• It can be done by
• 1. heat
• 2. electrolysis
• 3. sunlight
• Ab  a + B

14. DISPLACEMENT/SUBSTITUTION REACTION

15. DISPLACEMENT/SUBSTITUTION REACTION
• The type of chemical reaction in which a more reactive element (Metal or Nonmetal) displaces a
lesser reactive element from their salt/compound and takes up the place of that element.
• AB + C  AC + B

20. DOUBLE DISPLACEMENT REACTION
• When two reacting species(reactants) exchange
their radicals(ions) to produce new products.

22. MORE EXAMPLES

24. OXIDATION
• Gain(addition) of Oxygen
• Loss(elimination) of Hydrogen
• Loss of electron
• Increase in oxidation state
REDUCTION
• Loss(elimination) of Oxygen
• Gain (addition) of Hydrogen
• Gain of electron
• Decrease in oxidation state