QuickClot does have the potential for generating quite a bit of heat. However, please be mindful that your homemade experiment would be considered inappropriate use of the product. If you bought the QuickClot four years ago...I seem to recall that when it first came out, you couldn't buy the product without stating that you had or were going to have the proper QuickClot-specific training to use it. The training material quite clearly warns that excess water should be removed before applying QuickClot to minimize heat generation. In addition, as little of the product should be used as necessary. So, pouring a quarter cup of water into a full pouch of QuickClot may provide dramatic results, and does show its potential for burning under the wrong circumstances, but its not really an appropriate experiment, in my opinion.

There are other "blood stopping" options, like Bleed-X which uses a plant starch-based material, or some chitosan-impregnated bandages if you wanted to try something else. These other products do not generate heat. I'm not sure if they are any less or more effective than QuickClot, though.

Actually, come to think of it, I don't think that any of these products has really been tested on children, so you should consider that, too.

Keep those little ones safe!