Pinner said: borax bouncy balls - recipe. This was a quick fun experiment. You need to use a lot of food colouring to get a bright coloured ball. Don't use too much cornstarch. Overall good experiment!
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*Colored ice balls* Fill balloons with water and add food coloring- red and green would be great around christmas! (be careful not to let the food coloring escape!), once frozen cut the balloons off and voila! Look like giant marbles :)
Use chemistry to make a bouncing polymer ball, then alter the procedure to see the effect the changes have on the characteristics of the bouncing ball.: Make a Bouncing Polymer Ball - Introduction and Materials