Gas
When one observes the phase of matter of water, they are observing a liquid state at room temperature and pressure. This means that the water molecules are loosely held together and able to flow and take the shape of their container.
The liquid phase of matter can act as a solvent. In this phase, molecules have enough energy to move around and interact with other substances to dissolve them.
A gas. Gas will expand to fill the available space.
The phase of matter where molecules are most closely attracted to each other is the solid phase. In solids, molecules are tightly packed and held together by strong intermolecular forces, which restrict their movement and keep them in a fixed position.
liquid
When one observes the phase of matter of water, they are observing a liquid state at room temperature and pressure. This means that the water molecules are loosely held together and able to flow and take the shape of their container.
liquid phase
A gaseous phase!
gas
Solids.
The liquid phase of matter can act as a solvent. In this phase, molecules have enough energy to move around and interact with other substances to dissolve them.
The gas phase of matter has molecules that are loosely packed with a distinct boundary. Gas molecules are free to move around and are not held together in a fixed position like in a solid or liquid.
A gas. Gas will expand to fill the available space.
Plasma, then gases.
A gas. Gas will expand to fill the available space.
In the solid phase, molecules are closely packed together in a fixed position, vibrating in place. In the liquid phase, molecules are more loosely packed and have more freedom to move around, sliding past each other. In the gas phase, molecules are far apart and move freely and quickly, colliding with each other and the container walls.
Solids are the only phase of matter which have a fixed shape and volume.