We’ve made tons of slime recipes, but until we started experimenting with borax-free slime recipes, I had no idea you could make slime using baking soda and glue! This baking soda slime was super easy to make, but it was stickier than our favorite slime recipe. We decided that on Earth Day, we should only use Earth-friendly ingredients and no questionable chemicals like Borax. Baking soda is a fun alternative to use that makes a slime that almost has the same texture as traditional borax-based slime. My kids had a blast making and playing with this slime, and I knew there was no worry about hurting their skin or causing allergic reactions because all it is is non-toxic glue and baking soda.
However, if you make this slime recipe for Earth Day, be prepared to get messy.Unless your kids have a baking soda sensitivity (some do), there is no reason why you can’t make this recipe with kids who are old enough not to try and put slime in their mouths.
Borax-Free and Kid-Safe Earth Day Baking Soda Slime
This borax-free slime is totally safe for kids and is a fun, messy way to play on Earth Day!
What you need to make baking soda slime:
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Warm your water in the microwave or on the stove. Dissolve 1/4 of a cup of baking soda into the water and stir until all the particles are dissolved.
Divide your 5 ounce bottle of Elmer’s clear glue into two small bowls. Color one part blue and one green.
Add half of the baking soda mixture to each container of glue.
Gently stir with a fork until slime starts to form.
This slime is much stickier than slime made with laundry starch or Borax powder, so be prepared for that. Over time, it does get stickier, so what we did is reserve a bit of the baking soda water and whenever the slime started to stick to our fingers, we dipped them into the baking soda water, which solidified the slime a little more.
The slime turns into a sort of gloopy mess at first, but once you pick it up and start working it between your fingers, it will turn into regular, stretchy slime (although stickier).
Cover the bottom of the plate with the blue slime.
Add drops of green slime to make the continents. We didn’t get too accurate with our placement, but you could be more accurate if you wanted.
Once the Earth is made, play with the slime. It will eventually turn a pretty teal color.
More Earth Day Activities