Final Answer:
Liquid state of matter has a high density and an indefinite shape.
b) Liquid
Step-by-step explanation:
In the realm of states of matter, liquids exhibit high density and an indefinite shape. Unlike solids that have a fixed shape and maintain a specific volume, liquids conform to the shape of their container while maintaining a relatively constant density. This is attributed to the moderate intermolecular forces present in liquids, allowing particles to move freely yet remain closely packed.
The high density of liquids arises from the close proximity of molecules. While gases have low density due to the significant distances between particles and solids maintain a fixed structure, liquids strike a balance. In a liquid, particles are close enough to have a defined volume, but they lack the rigid structure found in solids. The cohesive forces in liquids contribute to their ability to flow and take the shape of their container.
Examples of liquids include water, oil, and ethanol. Understanding the unique characteristics of liquids helps explain why they are essential in various scientific, industrial, and everyday applications, serving as a crucial intermediary state between solids and gases.