Science Experiment : Glow In The Dark Slime

Slime is a moist, soft, and sometimes slippery or sticky substance.

Slime Recipe

 

Bowl

Food Coloring

Spoon

UV Light Source

A Dark Room

1 Cup Cornstarch

1 Cup of Tonic Water

What to do:

1.    Add 1 cup of tonic water to the bowl and add a few drops of the food coloring and stir the mixture.
2.    Pour in the cornstarch into the mixture and stir continuously. It will thicken as you add more cornstarch. Keep adding cornstarch and continue stir it until it reaches the desired consistency.
3.    This slime will be more liquid as we stir. When we stop stirring, it will become more solid. More water can be added it necessary.
4.    Take the slime to a dark room and shine ultra violet light on it.

Questions
  1.    Why is tonic water used in place of water?

2.    Why does the slime glow when black light is switched on?
3.    Why does the slime become more solid when we stop stirring?

What’s Going On?

1.    Ultra violet light will excite phosphors which is a chemical contained is quinine. The phosphors will change the UV light into a visible light. Quinine is one of the components in tonic water.

2.    Ultra violet light will cause substances with phosphors to illuminate.
3.    Ultra violet light is used in forensic science, in shows, in photography, and in determining the authenticity of bank notes.
4.    The viscosity of the cornstarch slime depends in how it is mix and stirred.

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