Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature

Explanation

To address the question, we will provide the chemical equations for two types of reactions: one that demonstrates a change in color and another that exhibits a change in temperature.

### Step-by-Step Solution:

#### (i) Change in Color

1. **Identify the Reactants**: We will use copper metal (Cu) and silver nitrate (AgNO₃) as our reactants.

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