Materials

• 1/4 cup liquid starch
• 1/4 cup Elmer's glue
• 2 tablespoons glow-in-the-dark pigment
• 1 bowl

Instructions

STEP 1: Mix the liquid starch and glow-in-the-dark-pigment in a bowl. Add the Elmer's glue and continue to mix.

STEP 2: Remove the glow slime from the bowl, continue to mix the slime with your hands.

STEP 3: Hold the glow slime close to a bright light source, turn off the lights and observe.

Explanation

The glow-in-the-dark pigment or phosphorescent pigment absorbs light and then re-emits it over a period of time causing the glow slime to glow.

Jason Lindsey is a science outreach educator with Hooked on Science. Check out his website, hookedonscience.org, for webcasts and experiments.