class 10 cbse pptx chemistry chemical equations and reactions cheat sheet for class 10 cbse students.

1. CHEMICAL EQUATION
AND REACTIONS

2. CONTENT
• INTRODUCTION TO CHEMICAL REACTIONS
• LAW OF CONSERVATION OF MASS
• BALANCING
• TYPES OF CHEMICAL REACTIONS
1.combination
2.decomposition
3.displacement
4.double displacement
5.redox
REDOX REACTION
CORROSION RANCIDITY

3. What is a chemical reaction?
Chemical reaction – reactions where some chemical change occurs
milk into curd
rusting of iron
fermented grapes
digestion of food
respiration
Determine whether a chemical reactn
has taken place
*change in state
change in temp
evolution of gas
change in colour

4. Law of conservation of mass.
Balancing of chemical equations are based on this law
Law; mass can neither be created nor be destroyed
therefore the total mass of molecules in the reactant
side should be equal to the total mass of molecules in
the product side
10
11
11 7
4

5. BALANCING CHEMICAL EQUATIONS
• SKELTAL EQUATION
• NEED OF BALANCING AN EQUATION
• METHOD;
reactants side product side

6. Combination reaction
TWO OR MORE REACTANTS TO ONE SINGLE PRODUCT AFTER A
CHEMICAL REACTION.
Combination reaction

8. Slaked lime –white washing
Calcium hydroxide after reaction with CO2 –
calcium carbonate(shiny)

9. respiration

10. Decomposition reactiom
AB A + B
single reactant decomposes to two or more
products

11. Thermal decompositon

12. Electrolytic decomposition

13. Black and white photography
Photolytic decomposition

14. Endothermic and exothermic
reaction

15. Displacement reaction
Reactions in which the more reactive metal displaces
the less reactive metal from its salt in a chemical
reaction
AB + C  CB + A
where c is reactive than a

18. Double displacement reaction
Exchange of ions in a reaction

19. Redox reactions
• Oxidation – removal of hydrogen
addition of oxygen
. Reduction – removal of oxygen
addition of hydrogen

21. Corossion and rancidity
.