What do you understand by 'continuity of state' in gases and liquids ?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Continuity of State**: The term 'continuity of state' refers to the ability to transition between different states of matter, specifically between liquids and gases. This concept emphasizes that these states are not fixed but can change under certain conditions.

2. **Transition Between States**: In the context of gases and liquids, continuity of state involves the conversion of a liquid into a gas (vapor) and vice versa. For example, when a liquid is heated, it can change into a gas, and when a gas is cooled, it can condense back into a liquid.

3. **Conditions for Transition**: The transitions between these states depend on specific conditions, primarily temperature and pressure. For instance, water boils and turns into steam (gas) when heated above 100 degrees Celsius at standard atmospheric pressure. Conversely, when steam is cooled, it condenses back into liquid water.

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