Gases are one of the fundamental states of matter, along with solids and liquids. They are characterized by their ability to expand to fill the shape and volume of their container. Unlike solids and liquids, the molecules in a gas are much farther apart and move freely. Here are some key properties and characteristics of gases: 1. **Low Density**: Gases have much lower densities compared to solids and liquids because the molecules are widely spaced.
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