======Making Slime====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Homemade Slime ====Summary==== {{$demo.summary}} ====Procedure==== - In a mixing bowl, combine ½ cup of washable school glue with ½ cup of water. Add a few drops of food coloring if desired. - Stir in ½ teaspoon of baking soda until dissolved. - Add 2 tablespoons of contact lens solution (must contain boric acid and sodium borate) and stir vigorously. - Continue stirring until the mixture thickens and begins to pull away from the bowl. - Knead the slime with your hands for 5–10 minutes until it becomes less sticky and more elastic. - Store finished slime in an airtight container to keep it from drying out. ====Links==== Let's Make Slime Snot 🤧 Science Experiment for Kids | Play School Science Time - ABC Kids: {{youtube>a1H-6w6_5BY?}}\\ 7 Different Kinds of Slime | Science Experiments You Can Do at Home | Science Max #Slime - Science Max: {{youtube>BbtK6iU1pTk?}}\\ 📄 How to Make Slime - Science Buddies: [[https://www.sciencebuddies.org/stem-activities/how-to-make-slime]]\\ ====Variations==== * Add glitter for sparkly slime. * Mix in glow-in-the-dark paint or thermochromic pigment for color-changing slime. * Use tonic water for slime that glows under black light. * Replace water with shaving cream to make "fluffy" slime. * Adjust the amount of contact lens solution to change the slime’s texture and stretchiness. ====Safety Precautions==== * Wear safety goggles if working with children to prevent splashes. * Do not eat slime or its ingredients. * Wash hands after handling slime. * Dispose of leftover slime in the trash—never down the drain, as it may clog pipes. * Keep contact lens solution out of eyes; it contains borates which can be irritating. ====Questions to Consider==== * What role does the contact lens solution play in making slime? (It contains borate compounds that crosslink the glue’s polymers.) * Why does kneading change the slime’s texture? (It allows the crosslinking reaction to progress evenly throughout the mixture.) * How do added ingredients like shaving cream or glitter affect slime’s properties? (They change texture, appearance, and elasticity.) * How is slime an example of a polymer? (It consists of long chains of molecules linked together, similar to plastics and rubbers.)