What is an item that has definite weight and volume but no definite shape?

The correct answer is a liquid. Liquids possess a definite weight and volume, meaning they have a specific amount of mass and will occupy a certain amount of space. However, they do not have a definitive shape; instead, they take the shape of the container they are in. This characteristic of liquids allows them to flow and adapt to various forms, which distinguishes them from solids that have a fixed shape and from gases that have neither a definitive shape nor a fixed volume.

In contrast, gases also have definite weight and volume, but they expand to fill their container, thus lacking both definite shape and defined volume. Ice cubes are solids that maintain both definite shape and volume due to their rigid structure, while solids in general are characterized by having a fixed shape and volume.