- Colour of various salts mentioned in the chapter- Chemical reactions and equations and their colour change when heated or under some chemical reactions.
| Name of the salt | Molecular formula | Colour of the compound |
| Lead Nitrate | Pb(NO3)2 | White |
| Lead Iodide | PbI2 | Yellow |
| Copper(II) Nitrate | Cu(NO3)2 | Bluish green |
| Ferrous sulphate | FeSO4 | Light green |
| Ferric oxide | Fe2O3 | Reddish brown |
| Calcium carbonate | CaCO3 | White precipitate in solution |
| Calcium hydrogen carbonate | Ca(HCO3)2 | Colourless in solution |
| Barium sulphate | BaSO4 | White |
| Copper sulphate pentahydrate | CuSO4. 5H2O | Blue |
| Copper sulphate | CuSO4 | White |
| Silver sulphide | Ag2S | Black |
| Silver chloride | AgCl | White |
- Thecolour change of various indicators in both acidic and basic solutions mentioned in the text book
| Indicator | Type of indicator | colour in acidic solution | colour in basic solution |
| Litmus | Natural indicator | Red | Blue |
| Red cabbage leaf extract | Red | Green | |
| Hibiscus plant | Pink | Green | |
| Turmeric | No change | Brownish red | |
| Phenolphthalein | Synthetic indicator | Colourless | Pink |
| Methyl orange | Red | Yellow |
- The name and formulae of the most common strong as well weak acids and bases, in order to identify the type of salts formed.
- For eg. Sodium hydroxide is a strong base and Hydrochloric acid is a strong acid, so the salt formed by combination of them will be a neutral salt.
- The general chemical reaction of both acids and bases on reacting with metals, metal hydrogen carbonates and metal carbonates.
- For eg. Acid + Metal carbonate à Salt + CO2 + H2O
- The name and formula of the most common cations and anions along with their valency, which will help to write the molecular formula of a compound.
- The pH value of the substance given in the NCERT textbook.
- The exceptional behaviour exhibited by the elements among metal and non-metals
- For eg. Non-metal are brittle in nature, but diamond which is made up of carbon, a non-metal; one of the strongest substance exists.
- The order of the reactivity series.
- In IUPAC nomenclature of compounds, the root word of 1 – 10 carbon atoms and the appropriate suffix for the functional groups given in the text book.
- The general formulae for alkanes, alkenes and alkynes.
- First 30 elements name, symbol and atomic numbers and atomic masses.
