Question

In the following experiment, Diagram A shows ice cubes floating on water. The same cup was observed after 2 days; Note down your observations in the table provided and also give the cause of the phase change. Glass Ice cubes Water Water droplets on the outside of the glass Diagram A Diagram B 2 days later Glass -Water Event Water droplets formed on the outside of the glass in diagram A. Ice is no longer visible in diagram B. The level of water in the glass dropped in diagram B. Phase Change​

Answer 1

Observations:

Diagram A:
- Glass: Intact
- Ice cubes: Floating on water
- Water: Present
- Water droplets: None on the outside of the glass

Diagram B (2 days later):
- Glass: Intact
- Ice cubes: No longer visible
- Water: Present
- Water droplets: Formed on the outside of the glass
- Level of water: Dropped in the glass

Phase Change:
The phase change observed in this experiment is the melting of ice. In Diagram A, the ice cubes were in a solid state, floating on the water. Over the course of 2 days, the ice cubes melted and transformed into liquid water. This phase change from solid to liquid is known as melting. As a result, water droplets formed on the outside of the glass due to the condensation of water vapor in the surrounding air. The drop in the water level in Diagram B could be due to evaporation or possible absorption by the surrounding materials.