Which description best fits a liquid?

The description that best fits a liquid is one that specifies an indefinite shape but a definite volume. In a liquid state, particles are closely packed together, allowing the liquid to maintain a specific volume. This means that no matter the container's shape where the liquid is held, the amount of liquid remains constant. However, liquids do not have a fixed shape; they take the shape of the container they are in. This characteristic is a result of the particles being able to move more freely compared to solids, where particles are tightly bound in a rigid structure.

Understanding the properties of liquids as having a definite volume helps distinguish them from gases, which have neither a definite shape nor volume. This distinction is crucial in chemistry and helps to understand the states of matter and their behaviors.