Reactive metals like potassium and sodium react gently with cold water to liberate hydrogen. (True / False)

Explanation

To determine whether the statement "Reactive metals like potassium and sodium react gently with cold water to liberate hydrogen" is true or false, we can analyze the behavior of these metals when they come into contact with water.

### Step-by-Step Solution:

1. **Identify the Metals**: The metals in question are potassium (K) and sodium (Na), which are both alkali metals known for their reactivity.

2. **Understand the Reaction with Water**: When potassium and sodium react with cold water, they undergo a chemical reaction that produces hydrogen gas and a corresponding hydroxide (potassium hydroxide for potassium and sodium hydroxide for sodium).

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