A type of liquid is a substance that flows freely and takes the shape of its container. Liquids have a definite volume but no fixed shape. Common examples include water, oil, and juice. They are made up of molecules that are close together but can move past one another, allowing liquids to flow. Liquids can be classified based on their properties, such as viscosity and density. For instance, honey is a thick liquid with high viscosity, while water is less viscous and flows easily. Understanding the characteristics of different liquids is important in various fields, including chemistry and engineering.