What happens when one mixes sugar with water? The students made hypothesis : the sugar will melt, the sugar will stay at the bottom on the water... When they made the experiment, the children observed that the sugar was disappearing in the water but not really because when they tasted it, they realized the water was sweet and sugary; the sugar was still in the water but dissolved...
Then they tried with salt, coconut, flour, powdered milk and little marshmallows.
With marshmallows and coconut, we still see what we added : it is insoluble in water.
In another session, the students verified if powdered chocolate, coffee, oil and food coloring were soluble.
Then, the students draw their observations in their science notebook.
Finally, to finish the project on mixtures, the children enjoyed making a lava lamp! Here is the recipe :
1/3 water, 2/3 oil, a few drops of food coloring and finally effervescent drops (Alka-Selzer). Here are the results.
Bravo to all our little scientists! What a fun experiment it was!