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प्रश्न
A chemical reaction is often accompanied by external indications or characteristics.
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उत्तर
A chemical reaction is accompanied by a change in colour of reactants and products
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संबंधित प्रश्न
Changes in which new substances are formed are called ______ changes.
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Negatively charged ions are called ..........
How is a strong electrolyte different from a weak electrolyte?
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A new substance is formed in a _______ change.
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The substances formed as a result of a chemical reaction are called _______
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | H2CO3(aq) | Displacement |
| 2AgCl(s) | FeSO4(aq) + Cu(s) | Combination |
| CuSO4(aq) + Fe(s) | BaSO4↓ + ZnCl2(aq) | Decomposition |
| H2O(l) + CO2(g) | 2Ag(s) + Cl2(g) | Double displacement |
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Limestone powder disappears on adding to dilute hydrochloric acids.
Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.
The chemical name of baking soda is sodium bicarbonate.
What is the difference between reactants and products?
