Write the following chemical changes. 1. …
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Gaurav Seth 5 years, 4 months ago
1. Water
On dissolving the ash in water it forms a new substance. This change can be written in the form of the following equation: Magnesium oxide (MgO) + Water (H2O) → Magnesium hydroxide [Mg(OH)2 ]
2. Magnesium hydroxide
On dissolving the ash in water it forms a new substance. This change can be written in the form of the following equation: Magnesium oxide (MgO) + Water (H2O) → Magnesium hydroxide [Mg(OH)2 ]
3. Copper sulphate
The brown deposit on the iron nail is copper, another new substance. We can write the reaction as: Copper sulphate solution (blue) + Iron → Iron sulphate solution (green) + Copper (brown deposit)
4. Vinegar (Acetic acid) + Baking soda (Sodium hydrogencarbonate) → Carbon dioxide + other substances
5. Iron
The process of rusting can be represented by the following equation: Iron (Fe) + Oxygen (O2 , from the air) + water (H2O) → rust (iron oxide Fe2O3 )
6. rust
The process of rusting can be represented by the following equation: Iron (Fe) + Oxygen (O2 , from the air) + water (H2O) → rust (iron oxide Fe2O3 )
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