Educational worksheet explaining the science behind why regular and diet soda cans behave differently in water, highlighting buoyancy and density.

- The regular soft drink sank because it is denser than water, while the diet soft drink floated because it is less dense than water.
- Density determines whether an object floats or sinks: if an object is denser than the liquid, it sinks; if it is less dense, it floats.
- The regular soft drink contains a lot of sugar, which makes it heavier and more densely packed in the same volume.
- The diet soft drink uses artificial sweetener, which is much sweeter than sugar, so less is needed to achieve the same taste, resulting in fewer ingredients and lower density.
- Because the diet soft drink has lower density, it displaces more water relative to its weight, giving it greater buoyancy and causing it to float.