Comparing the States
Water exists in three forms. Each form behaves differently regarding shape, flow, and volume.
1. Solid State (Ice)
- Shape: Fixed. Retains its shape irrespective of the container.
- Flow: Does not flow.
- Spread: Does not spread.
2. Liquid State (Water)
- Shape: Not fixed. Takes the shape of the container holding it.
- Flow: Flows easily (fluid).
- Spread: Spreads on a surface, but maintains a constant volume.
3. Gaseous State (Water Vapour)
- Shape: Not fixed.
- Flow: Flows freely in all directions.
- Spread: Spreads out to fill the entire available space. It does not have a fixed volume like liquids.
Comparison Table
| Property | Ice (Solid) | Water (Liquid) | Water Vapour (Gas) |
|---|---|---|---|
| Shape | Fixed Shape | Takes shape of container | No fixed shape |
| Ability to Flow | No | Yes | Yes (in all directions) |
| Ability to Spread | No | Yes (on surfaces) | Yes (fills entire space) |
| Visibility | Visible | Visible | Invisible (mostly) |
Warning
Note: Steam is often visible as a white cloud, but that white cloud is actually tiny liquid droplets formed by condensation. True water vapour is invisible.