List any two observations when a highly reactive metal is dropped in water.

Explanation

To answer the question regarding the observations when a highly reactive metal is dropped in water, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reaction**: When a highly reactive metal, such as sodium, is dropped in water, it reacts vigorously. The general reaction can be represented as:
\[ \text{Metal} + \text{Water} \rightarrow \text{Metal Hydroxide} + \text{Hydrogen Gas} \]
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