Nutrasweet tastes a lot sweeter than sugar, and less of it is needed in the can , than sugar, to get the appropriate sweetness. The weight of the needed sugar makes the can heavier and, since the volumes are equal, more dense. Boats A body of water naturally pushes upward. That's the water's buoyancy. You can feel buoyancy by pushing the palm of your hand against a water surface.
Some water has more buoyancy than other water.
Here's how to find out. Shape aluminum foil into several boats. Give each a name so you can remember one from the other. Put the boats into the dishpan. See which boat floats best by adding coins or metric weights until the boat sinks.