What is the scientific explanation behind the toys that grow in water?

October 27th, 2009 | by Michael |
toys
Molly asked:


You know the toys you get at the dollar store, you stick them in water and they grow? I’m doing a science fair project on them and I need a website, or something that gives me the science of their chemical makeup and how they work. Thank you!

VERNON
  1. 2 Responses to “What is the scientific explanation behind the toys that grow in water?”

  2. By ben l on Oct 29, 2009 | Reply

    they’re proabbly extremely porous and when you put them in water the pores absorb water and thus it expands

  3. By wihntr on Nov 1, 2009 | Reply

    They are sponges. Do a search on sponges man made and natural. You should plenty of info for your project.

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