Final answer:
The object with the largest volume doesn't have the largest mass because mass and volume are related by density; different materials with the same volume can have different masses if their densities vary.
Step-by-step explanation:
An object with the largest volume does not necessarily have the largest mass because the mass is a measure of the amount of material, while volume is the measure of the physical space an object occupies. The key to understanding this difference is the concept of density, which is defined as mass per unit volume. Therefore, two objects of the same volume can have different masses if their densities are different. For example, a balloon filled with air and a similar-sized lump of lead both have volumes that maybe shape-dependent, but the lead has a much greater mass due to its higher density.
Density is a crucial concept here. It provides the linkage between mass and volume and can explain why materials such as iron are considered 'heavy,' while materials like whipped cream are considered 'light.' In terms of everyday language, we often refer to the 'heaviness' of an object as an indication of its density rather than its actual weight or mass.