,Did you know that even with less time, some students do better in their board exams
than others? The simple explanation for this is that they each have unique learning and
revision plans and strategies. In the case of science, once the concepts are understood,
one way to reduce revision time is to group the most crucial formulas and points in one
location, allowing for a quick glance and an instant reminder.
Subject experts at Careers360 have compiled a list of all the important formulas for
Class 10 Science in this handy ebook. The most crucial among them come with
examples to show how they are applied. You will see these formulas, diagrams, and
important points repeatedly in your final exams and monthly tests.
This ebook will save you time and help you quickly go over every significant formula
with examples that you might see in your exams. It will also help students reinforce their
understanding of fundamental concepts.
Chapterwise Class 10 Science - All Important Formulas, Diagrams
And Points
Chapter 1: Chemical Reactions and Equations
TYPES OF CHEMICAL REACTIONS
1. Combination or Addition reaction: A + B → AB
2. Decomposition Reaction: AB → A + B
3. Displacement Reaction: A + BC → AC + B
4. Double Displacement Reaction or Precipitation Reaction:
AgNO3 + NaCl → AgCl(s) + NaNO3
5. Oxidation and Reduction reactions:
1
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, Chapter 2: Acids, Bases and Salts
Important Reactions:
Acid + Metal → Salt + Hydrogen gas
Example: 2NaOH(aq) + Zn(s) → Na2ZnO2 (s) + H2 (g) (Sodium zincate)
Metal carbonate/Metal hydrogencarbonate + Acid → Salt + Carbon dioxide + Water
Example: NaHCO3(s) + HCl(aq) —-> NaCl(aq) + H2O(l) + CO2(g)
Base + Acid → Salt + Water
Example: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Metal oxide + Acid → Salt + Water
When electricity is passed through an aqueous solution of sodium chloride (called brine), it
decomposes to form sodium hydroxide. The process is called the chlor-alkali process because
of the products formed– chlor for chlorine and alkali for sodium hydroxide.
2NaCl(aq) + 2H2O(l) → 2NaOH(aq) + Cl2 (g) + H2 (g)
Bleaching Powder (CaOCl2) Formation:
Ca(OH)2 + Cl2 → CaOCl2 + H2O
Baking Soda (NaHCO3) Formation:
NaCl + H2O + CO2 + NH3 —---> NH4Cl (Ammonium chloride) + NaHCO3 (Sodium
hydrogencarbonate)
2
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than others? The simple explanation for this is that they each have unique learning and
revision plans and strategies. In the case of science, once the concepts are understood,
one way to reduce revision time is to group the most crucial formulas and points in one
location, allowing for a quick glance and an instant reminder.
Subject experts at Careers360 have compiled a list of all the important formulas for
Class 10 Science in this handy ebook. The most crucial among them come with
examples to show how they are applied. You will see these formulas, diagrams, and
important points repeatedly in your final exams and monthly tests.
This ebook will save you time and help you quickly go over every significant formula
with examples that you might see in your exams. It will also help students reinforce their
understanding of fundamental concepts.
Chapterwise Class 10 Science - All Important Formulas, Diagrams
And Points
Chapter 1: Chemical Reactions and Equations
TYPES OF CHEMICAL REACTIONS
1. Combination or Addition reaction: A + B → AB
2. Decomposition Reaction: AB → A + B
3. Displacement Reaction: A + BC → AC + B
4. Double Displacement Reaction or Precipitation Reaction:
AgNO3 + NaCl → AgCl(s) + NaNO3
5. Oxidation and Reduction reactions:
1
www.careers360.com
, Chapter 2: Acids, Bases and Salts
Important Reactions:
Acid + Metal → Salt + Hydrogen gas
Example: 2NaOH(aq) + Zn(s) → Na2ZnO2 (s) + H2 (g) (Sodium zincate)
Metal carbonate/Metal hydrogencarbonate + Acid → Salt + Carbon dioxide + Water
Example: NaHCO3(s) + HCl(aq) —-> NaCl(aq) + H2O(l) + CO2(g)
Base + Acid → Salt + Water
Example: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Metal oxide + Acid → Salt + Water
When electricity is passed through an aqueous solution of sodium chloride (called brine), it
decomposes to form sodium hydroxide. The process is called the chlor-alkali process because
of the products formed– chlor for chlorine and alkali for sodium hydroxide.
2NaCl(aq) + 2H2O(l) → 2NaOH(aq) + Cl2 (g) + H2 (g)
Bleaching Powder (CaOCl2) Formation:
Ca(OH)2 + Cl2 → CaOCl2 + H2O
Baking Soda (NaHCO3) Formation:
NaCl + H2O + CO2 + NH3 —---> NH4Cl (Ammonium chloride) + NaHCO3 (Sodium
hydrogencarbonate)
2
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