Is the sugar ice cube more or less dense than liquid water?
• Challenge students to come up with a formula of sugar and water to make an ice cube float in the middle of a glass of water (so it has the same density as liquid water). • Challenge students to float an egg. Place an uncooked egg in a container of water and show students how it sinks. Have students remove the egg and stir in a spoonful of sugar. Replace the egg and see if it rests in the same place. Students continue to add sugar, one spoonful at a time until the egg floats. Explain how the sugar is increasing the density of the water. • Fill an aquarium or large pail with water. Place cans of diet and regular soda in it. (Some diet sodas will float. Sugar sodas have a higher density and will sink.