Hooked on Science: Ghostbuster glow slime

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 glue and continue to mix.
• STEP 2: Remove the glow slime from the bowl; continue to mix the slime with your hands. Is the slime a solid or a liquid? Describe the glow slime using its observable properties.
• STEP 3: Hold the slime close to a bright light source, turn off the lights and observe. Describe the slime using its observable properties.

Explanation

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