* Volume refers to the amount of space an object occupies. It's essentially the object's three-dimensional size.
* Mass refers to the amount of matter an object contains. It's a measure of how much "stuff" is in the object.
Here are some examples:
* A balloon filled with helium vs. a balloon filled with air: Both balloons can have the same volume, but the helium balloon will have a much smaller mass because helium is a much lighter gas than air.
* A block of wood vs. a block of lead: You could have two blocks that take up the same amount of space (same volume). However, the lead block would be much heavier (have more mass) because lead is denser than wood.
Density is the key factor here. Density is a measure of how much mass is packed into a given volume.
* Density = Mass / Volume
So, if two objects have the same volume, the one with the higher density will have a higher mass.
