Slime was a toy product manufactured by Mattel, sold in a plastic trash can and introduced in February 1976. It consisted of a non-toxic viscous, squishy and oozy green or other color material made primarily from guar gum Different variations of Slime were released over the years, including Slime containing rubber insects, eyeballs, and worms.
There is nothing more fun than making a great batch of slime. We have three fantastic versions of slime including: Classic, Galactic, and Mermaid slime, just in time for summer!
Caution: Excessive exposure to Borax can cause some individuals to have an unfavorable skin reaction. For an Borax free version , you can substitute liquid starch for the Borax solution.
Mermaids are mythical half-human sea creatures with the upper body of a girl or woman and the tail of a fish. Mermaids are mentioned in sea folklores and are usually depicted as beautiful and gentle creatures that guide sailors and others travelling through the seas. This version of slime would be perfect as an activity at the beach or sea shore-especially when it is raining and you can't play in the sand or surf.
1. First, mix all the glue, 3 tbs. of liquid starch, and water together. Then add the food coloring and glitter. Mix well.
2. Mix and knead, checking consistency and balancing with more glue or more liquid starch as you go.
3. After you have a cohesive slime you can store in a plastic zip lock bag or jar. Store in a refrigerator.
If you want to give your slime a "Galaxy" look and feel, then this is the recipe. The consistency here is much better than some of the other slime or Gak recipes.
You can create galaxy colors by making small batches of black, turquoise, violet and white/silver using the following proportions.
• 1 bottle of Elmer’s clear school glue. (5oz)
• 1⁄2 - 3⁄4 cup of Sta-Flo liquid starch. (Walmart)
• Liquid watercolors (Amazon) Use several squirts until you achieve the desired results. Food coloring works too.
• Fine glitter in a variety of colors.
In a bowl, place glue watercolor and glitter. Mix well.
Then start adding the starch in small amounts. Mix well each time until the starch is fully incorporated.
You will then need to use your hands to knead the starch like you are making bread. You will most likely not use all of the starch. Too much starch and the slime will not be as stretchy as you would like. So, add small amounts at a time. Do a stretch test after each amount of starch is added.
Slime is what chemists refer to as a cross-linked polymer. Water acts as a bridge linking the glue to the sodium Tetraborate. The result is a shimmery fluid polymer that is 97% water. It is actually an endothermic reaction (gets cold in your hands).
To make a bunch of the Borax solution, mix 1 level tablespoon of the Borax powder to one 2-liter bottle of water, cap and shake like crazy!
Chemists are scientists who like to mix things! They study what things are made of, what properties things have, and how things react together. As you can see (or feel) chemists can have a lot of fun!
For more chemistry fun, check out our Extreme Radical Reaction STEM Box.
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