Give two reasons to justify—
(a) Water at room temperature is a liquid because:
Answer:
- Fixed volume but no fixed shape – Water takes the shape of the container it is in, a characteristic of liquids.
- Moderate intermolecular forces – The molecules in water are loosely packed and can flow freely, unlike solids.
Thus, water remains a liquid at room temperature (25°C).
(b) An iron almirah is a solid at room temperature because:
Answer:
- Fixed shape and volume – An iron almirah does not change its shape or size under normal conditions.
- Strong intermolecular forces – The particles in iron are tightly packed, giving it a rigid structure.
Thus, an iron almirah remains solid at room temperature.