This is a fun and easy video experiment that looks at how to create slime. Depending on how you mix the ingredients, you will get something that is stringy, slimy or more like mála. This is a great, quick and easy sensory experiment or video demonstration.
You may need to add more Borax solution to ensure that
all the liquid turns to slime.
White PVA glue is a plastic made from oil. Borax is a natural mineral mined from the earth. People sometimes add it to their washing to make the detergents work well. The experiment produces a fluid, cross-linked polymer. A polymer is a large molecule typically found in plastics. The slime polymer is composed of strands of PVA held together by the borate particles via hydrogen bonding. This cross-linking causes the slime. This is an irreversible reaction much like when an egg becomes a hard-boiled egg. The slime experiment is popular amongst all years while also being educational, students get to work on a recipe, use measurement, observation and teamwork skills to create the slime. Following this, a range of extension activities can be conducted in which students obtain and present evidence.
Every experiment comes with three worksheets, one for early, middle and upper years. They can be easily copied and given to students after the activity or for homework. Access to worksheets is available in the teacher resource pack to Kitchen Chemistry.
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