Supplies: Borax (from the supermarket or a small box from laundromat) Elmers Glue-All (White only) sustenance colorise (optional) Water One bountiful plastic collide w/screw lid - ala a large peanut cover sway One plain old cup instructions: tone 1 Add to bondher; 1/3 cup Elmers Glue 1/3 cup Water Food coloring Shake, fire or conflate these ingredients until mucilage dissolves in weewee. Step 2 Fill an empty cup with 1/3 cup of water Slowly pour in 2 tablespoons of borax, allow to settle for a minute sprout off extravagance water and discard the water Step 3 Scrape the nettled borax B into the jar with mix A, close lid Shake like crazy.... oh yeah, cast off the jar too Shake until the slosh, slosh hold ups thump, thump liberal and remove the guk, you can scrap extra from the sides Now admit! It may stain things, could get stuck in carpets, who knows? The Science: Elmers glue is copolymer polyvinylalcohol, PVA, a plastic made from oil Borax is a earthy mineral mined from the earth made of boron, sodium, oxygen and water.
When you add up together water to elmers glue the PVA, being unstable, starts to dissolve in the water. When you add the wet borax, it is slightly acidic, and it reacts with the PVA to crosslink. This crosslinking causes the guk to undergo an irreversible gelation reaction a good deal like when an egg boils to become a hard boil egg. It is safe to handle, but hey! lets non eat it...OK? If you want to get a full essay, separate it on our website:
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