Give two reasons to justify: (a) water at room temperature is a liquid. (b) an iron almirah is a solid at room temperature.

(a) Water at room temperature is a liquid:
The molecules of water at room temperature are held together by relatively weaker intermolecular forces compared to those at lower temperatures. Even though the thermal energy at room temperature is strong enough to allow the water molecules to overcome these forces, they are not strong enough to completely break them. Therefore, water maintains its liquid form due to the moderate strength of these intermolecular forces. The melting point of water, which is when it transitions from a solid to a liquid, is 0°C. At room temperature, which is above the melting point, the water molecules have sufficient thermal energy to remain in their liquid state without solidifying.

(b) An iron almirah is a solid at room temperature:
The almirah, made of iron, exhibits a robust structure with closely arranged iron atoms forming a lattice. This sturdy arrangement, sustained by powerful metallic bonds, maintains its solid state even at room temperature, allowing little room for shifting or distortion. Thanks to its high melting point of approximately 1538°C, iron’s formidable bond strength cannot be easily overcome by thermal energy at usual room temperatures, thus ensuring the iron almirah’s durability and form.