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Syllabus · CBSE · Classes 7 to 10

Every chemical formula and equation in the CBSE syllabus.

A CBSE student meets 79 chemical formulas and 70 chemical equations between Class 7 and Class 10, chapter by chapter. Writing a chemical formula is not explained until Class 9, and writing and balancing a chemical equation not until Class 10 — by which point both have been set in exercises for two years.

Board
Central Board of Secondary Education
Classes covered
Classes 7 to 10
Chemical formulas
79 listed below
Chemical equations
70 listed below
Writing a formula is taught
Class 9, Chapter III — Atoms and Molecules
Balancing is taught
Class 10, Chapter I — Chemical Reactions and Equations

The gap. Formulas and equations both appear from Class 7. Writing a formula is explained in Class 9 and balancing in Class 10.

Compiled by the author from the board’s own textbooks, chapter by chapter. Equations are recorded as the textbook sets them; where one is printed without being balanced it is marked as such and left as printed. Have a teacher confirm the list against the current edition before it is sent to a school.

Class 7

Chapter V — Acids, Bases and Salts

Chemical formulas — 3

  1. 1 HCl
  2. 2 NaOH
  3. 3 NaCl
Chemical equations set in Chapter V — Acids, Bases and Salts
No.EquationCondition
1 HClplus NaOH→ NaClplus H2O—

Chapter VI — Physical and Chemical Changes

Chemical formulas — 6

  1. 4 MgO
  2. 5 Mg(OH)2
  3. 6 CO2
  4. 7 Ca(OH)2
  5. 8 CaCO3
  6. 9 Fe2O3
Chemical equations set in Chapter VI — Physical and Chemical Changes
No.EquationCondition
2 Mgplus O2→ MgOPrinted unbalanced—
3 MgOplus H2O→ Mg(OH)2—
4 CO2plus Ca(OH)2→ CaCO3plus H2O—
5 Feplus O2plus H2O→ Fe2O3Printed unbalanced—

Class 8

Chapter IV — Metals and Non-metals

Chemical formulas — 6

  1. 10 Cu(OH)2
  2. 11 CuCO3
  3. 12 SO2
  4. 13 H2SO3
  5. 14 CuSO4
  6. 15 ZnSO4
Chemical equations set in Chapter IV — Metals and Non-metals
No.EquationCondition
6 2Cuplus H2Oplus CO2plus O2→ Cu(OH)2plus CuCO3—
7 SO2plus H2O→ H2SO3—
8 CuSO4plus Zn→ ZnSO4plus Cu—
Names that cannot be turned back into a formula, because the element has a variable valency
FormulaName givenCorrect name
Cu(OH)2Copper HydroxideCopper(II) Hydroxide, or Cupric Hydroxide
CuCO3Copper CarbonateCopper(II) Carbonate, or Cupric Carbonate
CuSO4Copper SulphateCopper(II) Sulphate, or Cupric Sulphate

Class 9

Chapter III — Atoms and Molecules

Chemical formulas — 24

  1. 16 H2S
  2. 17 CCl4
  3. 18 MgCl2
  4. 19 Al2O3
  5. 20 CaO
  6. 21 NaNO3
  7. 22 Na2CO3
  8. 23 (NH4)2SO4
  9. 24 CaCl2
  10. 25 Na2O
  11. 26 AlCl3
  12. 27 Na2S
  13. 28 Al2(SO4)3
  14. 29 K2SO4
  15. 30 KNO3
  16. 31 Cu(NO3)2
  17. 32 HNO3
  18. 33 Na2SO3
  19. 34 NH3
  20. 35 CH3OH
  21. 36 ZnO
  22. 37 K2CO3
  23. 38 Na2SO4
  24. 39 Na3PO4

Class 10

Chapter I — Chemical Reactions and Equations

Chemical formulas — 26

  1. 40 Fe3O4
  2. 41 CO
  3. 42 BaCl2
  4. 43 BaSO4
  5. 44 SO3
  6. 45 FeSO4
  7. 46 Pb(NO3)2
  8. 47 PbO
  9. 48 NO2
  10. 49 AgCl
  11. 50 AgBr
  12. 51 CuCl2
  13. 52 PbCl2
  14. 53 CuO
  15. 54 MnO2
  16. 55 MnCl2
  17. 56 KOH
  18. 57 Ca(NO3)2
  19. 58 H2SO4
  20. 59 AgNO3
  21. 60 Zn(NO3)2
  22. 61 KBr
  23. 62 BaI2
  24. 63 KI
  25. 64 BaBr2
  26. 65 ZnCO3
Chemical equations set in Chapter I — Chemical Reactions and Equations
No.EquationCondition
9 Znplus H2SO4→ ZnSO4plus H2—
10 3Feplus 4H2O→ Fe3O4plus 4H2steam
11 COplus 2H2→ CH3OH—
12 H2plus Cl2→ 2HCl—
13 3BaCl2plus Al2(SO4)3→ 3BaSO4plus 2AlCl3—
14 2Naplus 2H2O→ 2NaOHplus H2—
15 BaCl2plus Na2SO4→ BaSO4plus 2NaCl—
16 CaOplus H2O→ Ca(OH)2—
17 Cplus O2→ CO2—
18 2H2plus O2→ 2H2O—
19 CH4plus 2O2→ CO2plus 2H2O—
20 2FeSO4→ Fe2O3plus SO2plus SO3heat
21 CaCO3→ CaOplus CO2heat
22 2Pb(NO3)2→ 2PbOplus 4NO2plus O2heat
23 2AgCl→ 2Agplus Cl2sunlight
24 2AgBr→ 2Agplus Br2sunlight
25 Feplus CuSO4→ FeSO4plus Cu—
26 Pbplus CuCl2→ PbCl2plus Cu—
27 2Cuplus O2→ 2CuO—
28 CuOplus H2→ Cuplus H2O—
29 ZnOplus C→ Znplus CO—
30 MnO2plus 4HCl→ MnCl2plus 2H2Oplus Cl2—
31 4Naplus O2→ 2Na2O—
32 2PbOplus C→ 2Pbplus CO2—
33 Fe2O3plus 2Al→ Al2O3plus 2Fe—
34 2NaOHplus H2SO4→ Na2SO4plus 2H2O—
35 3H2plus N2→ 2NH3—
36 2H2Splus 3O2→ 2H2Oplus 2SO2—
37 2Kplus 2H2O→ 2KOHplus H2—
38 2HNO3plus Ca(OH)2→ Ca(NO3)2plus 2H2O—
39 NaClplus AgNO3→ AgClplus NaNO3—
40 BaCl2plus H2SO4→ BaSO4plus 2HCl—
41 Znplus 2AgNO3→ Zn(NO3)2plus 2Ag—
42 2Alplus 3CuCl2→ 2AlCl3plus 3Cu—
43 BaCl2plus K2SO4→ BaSO4plus 2KCl—
44 2KBrplus BaI2→ 2KIplus BaBr2—
45 ZnCO3→ ZnOplus CO2—
46 Mgplus 2HCl→ MgCl2plus H2—
Names that cannot be turned back into a formula, because the element has a variable valency
FormulaName givenCorrect name
Pb(NO3)2Lead NitrateLead(II) Nitrate, or Plumbous Nitrate
PbOLead OxideLead(II) Oxide, or Plumbous Oxide
FeSO4Iron SulphateIron(II) Sulphate, or Ferrous Sulphate
CuCl2Copper ChlorideCopper(II) Chloride, or Cupric Chloride
PbCl2Lead ChlorideLead(II) Chloride, or Plumbous Chloride

Chapter II — Acids, Bases and Salts

Chemical formulas — 7

  1. 66 CH3COOH
  2. 67 Na2ZnO2
  3. 68 NaHCO3
  4. 69 Ca(HCO3)2
  5. 70 CaOCl2
  6. 71 NH4Cl
  7. 72 FeCl2
Chemical equations set in Chapter II — Acids, Bases and Salts
No.EquationCondition
47 2NaOHplus Zn→ Na2ZnO2plus H2—
48 Na2CO3plus 2HCl→ 2NaClplus H2Oplus CO2—
49 NaHCO3plus HCl→ NaClplus H2Oplus CO2—
50 CaCO3plus H2Oplus CO2→ Ca(HCO3)2—
51 2NaClplus 2H2O→ 2NaOHplus Cl2plus H2electrolysis
52 Ca(OH)2plus Cl2→ CaOCl2plus H2O—
53 NaClplus H2Oplus CO2plus NH3→ NH4Clplus NaHCO3—
54 2NaHCO3→ Na2CO3plus H2Oplus CO2heat
55 2Alplus 3H2SO4→ Al2(SO4)3plus 3H2—
56 Feplus 2HCl→ FeCl2plus H2dilute acid

Chapter III — Metals and Non-metals

Chemical formulas — 7

  1. 73 NaAlO2
  2. 74 K2O
  3. 75 HgS
  4. 76 HgO
  5. 77 Cu2S
  6. 78 Cu2O
  7. 79 ZnS
Chemical equations set in Chapter III — Metals and Non-metals
No.EquationCondition
57 4Alplus 3O2→ 2Al2O3—
58 Al2O3plus 6HCl→ 2AlCl3plus 3H2O—
59 Al2O3plus 2NaOH→ 2NaAlO2plus H2O—
60 Na2Oplus H2O→ 2NaOH—
61 K2Oplus H2O→ 2KOH—
62 Caplus 2H2O→ Ca(OH)2plus H2—
63 2Alplus 3H2O→ Al2O3plus 3H2—
64 2HgSplus 3O2→ 2HgOplus 2SO2—
65 2HgO→ 2Hgplus O2heat
66 Feplus 2HCl→ FeCl2plus H2dilute acid
67 2Cu2Oplus Cu2S→ 6Cuplus SO2—
68 2ZnSplus 3O2→ 2ZnOplus 2SO2—
69 3MnO2plus 4Al→ 3Mnplus 2Al2O3—
70 Splus O2→ SO2—

Questions

How many chemical formulas and equations are in the CBSE syllabus for Classes 7 to 10?
79 chemical formulas and 70 chemical equations. The chapter-by-chapter list on this page enumerates every one of them, with the chapter each appears in.
When does CBSE teach a student to write a chemical formula?
Class 9, Chapter III — Atoms and Molecules. Formulas are set in exercises from Class 7.
When does CBSE teach a student to balance a chemical equation?
Class 10, Chapter I — Chemical Reactions and Equations. Equations are set from Class 7, and Class 7 Chapter VI prints two that are not balanced.
What is the correct chemical name of CuSO4?
Copper(II) Sulphate, also called cupric sulphate. The textbook prints “Copper Sulphate”, which cannot be turned back into a formula because copper has a variable valency.
Is Fe2O3 iron oxide?
No. Fe2O3 is Iron(III) Oxide, or ferric oxide. Iron oxide is Fe3O4.

This is the gap the Playbook was written for.

The Language of Chemistry, Playbook® teaches the alphabets first — thirty elements and twenty-five radicals as punch-out tokens — then formulas, then balanced equations, in that order and with a score gate at each step. It is the order the tables above are set in and the order the textbooks explain last.

Each of those three steps is published on this site in full: the valencies, the formulas they build and the equations, worked — with free practice sets drawn from the very inventory above.

Request a sample copy for your school How the method works

The other boards

  • ICSE — Classes 6 to 9 · A student writes symbols in Class 6 and balances equations in Class 8, three years and one year respectively before Class 9 explains valency and how a formula is put together.
  • SSLC — Classes 8 to 10 · The order is inverted. Balancing an equation is explained in Class 8, before either a chemical formula or a chemical equation has been explained.