class 10

1. Effective Study Planning
Effective study planning is essential for achieving full marks in exams. It
involves setting clear goals, managing time efficiently, and maintaining
focus while studying.

2. Setting Clear Study Goals
1 SMART Goals
Set Specific, Measurable, Achievable, Relevant, and Time-bound goals to
provide a clear direction for studying.
2 Utilize Resources
Access relevant books, online resources, and mentorship to develop and
achieve study objectives.

3. Procrastination
1 Avoid Distractions
Identify and eliminate distractions to
prevent procrastination.
2 Break Down Tasks
Divide study tasks into manageable
segments to reduce the tendency to
procrastinate.
3 Practice Self-Discipline
Develop self-discipline through regular study routines and positive habits.

4. Taking Notes
Organized Notes
Maintain well-organized
notes to enhance retention
and understanding of study
material.
Effective Annotations
Use different annotation
methods to highlight key
points and clarify difficult
concepts.
Time Management
Allocate time for note-taking
and reviewing to stay
updated with study content.

5. Effective Revision Strategies
Periodic Reviews
Regularly review the
study material to
reinforce learning and
identify areas for
improvement.
Interactive Learning
Engage in group
discussions or teach
concepts to others to
deepen understanding.
Practice Tests
Take practice tests to
assess knowledge
retention and areas
needing further attention.

6. DIGESTION

7. 1.Combustion
2.Photosynthesis
3.Aerobic cellular respiration
4.Anaerobic respiration
(including fermentation)
5.Oxidation (including rust)
6.Metathesis reactions (such as baking soda
and vinegar)
7.Electrochemistry (including chemical
batteries)
8.Digestion
9.Soap and detergent reactions

8. THE PROCESS IN WHICH NO NEW CHEMICAL
SUBSTANCES ARE FORMED ARE CALLED
PHYSICAL CHANGES
Eg : Melting of ice
Dissolution of sugar in water

11. The processes in which the original substances lose their
nature and identity and form new chemical substances with
different properties are called chemical changes.
The process involving a chemical change is called a chemical
reaction

13. The chemical substances taken originally which may react together
are called reactants
The new chemical substances formed are called products.
For example,
In the burning of coke in air or oxygen, carbon and oxygen are the
reactants while carbon dioxide formed is the product.

16. •The characteristics of a chemical reaction include :
•Evolution of gas
•Change in color
•Change in temperature
•Change in state
•Formation of new substances
•Formation of a precipitate

17. Zn + H2SO4 → ZnSO4 + H2
A balanced equation is an equation for a chemical
reaction in which the number of atoms for each element in
the reaction is equal on the reactant and product side

19. Hydrogen + Chlorine  Hydrogen chloride

20. Barium chloride + Aluminium sulphate  Barium sulphate + Aluminium chloride

21. Barium chloride and sodium sulphate in water react to give insoluble
Barium sulphate and the solution of sodium chloride

23. Those reactions in which two or more elements or compounds combine
together to form a single compound are called combination reactions
more examples of combination reactions
(i) Burning of coal C(s) + O 2 (g) → CO 2 (g)
(ii) Formation of water from H2 (g) and O2 (g)
2H2 (g) + O2 (g) → 2H2O(l)

26. Reactions in which heat is released along with the formation of products
are called exothermic chemical reactions

27. Endothermic reactions are chemical reactions in which
the reactants absorb heat energy from the surroundings to
form products

28. Those reactions in which a single compound breaks down to give two
or more simpler substances are called decomposition reactions.

29. Decomposition reactions which take place by absorption of
heat. These are called thermal decomposition reactions

32. Decomposition reactions which take place on absorption of light. These are called
photo- decomposition reactions or simply photolysis.