Untangling tangled molecules. How big can your gummi worm grow? If you want to find out how much water your gummi worm absorbed, weigh it before and after the experiment. The added weight is the extra water.
Hot "Ice"- 1 litre white vinegar 4 Tbsp Baking Soda put vinegar in large bowl, add the baking soda bit by bit until it all dissolves. now boil the solution over medium heat for about an hour. Once you have it ready, pour into a jug and cover with cling film. Put it in the fridge to cool. Once cooled pour it out onto a surface. It should begin to crystallise straight away