Goldsmiths’ 2013

Slime Recipes

Easy Slime Recipe 1

2 Cups Water

1/2 Cup Corn flour

Food Colouring

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Bring water to a boil in a medium saucepan. Add corn flour, then food colouring while stirring constantly. Remove from heat and cool to room temperature. This makes a messy slime that goes from liquid to solid, and is great fun to play with.

Easy Slime Recipe 2

1/4 cup White Glue

1 1/4 cup Water, divided

1 tbsp. Borax – found in the laundry detergent aisle of your hardware store or supermarket

Food Colouring

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You will need: 50 mL of 4% poly(vinyl alcohol) (PVA), 10 mL of 4% borax solution, beaker, glass rod, plastic bag, food colouring.

Add 1 tbsp. Borax to one cup of warm water. Stir until completely dissolved. Make a 50% water 50% white glue solution by taking 1/4 cup of each and mix thoroughly. Add equal parts of the borax solution to equal parts of the glue solution. (Half cup of each will make a cup of slime.) Add a couple drops of food colouring and knead mix.

Add the borax solution to the PVA solution in the beaker and stir with the glass rod until the slime forms.

Tips

The PVA needs to be prepared beforehand as it takes ages to dissolve: slowly add the powdered PVA to hot (80oC) water with vigorous stirring (use a magnetic stirrer if you have one). Both the PVA and the borax (sodium tetra borate decahydrate) should be 4% solutions. You can experiment with the amount of borax to produce different viscosities of slime.

Try slowly stretching the slime: what happens?

Try stretching the slime quickly. What happens?

If slime is too sticky, add a little more borax. If slime is too slippery, add a little more white glue solution.

Variations:

Less rubbery and more transparent slime: Try a 4% solution of polyvinyl alcohol instead of the glue mixture

Different Consistencies: Add shaving cream or baby powder to the mixture. Glow in the Dark Slime: Add several drops of glow-in-the-dark paint during mixing.

General Slime Handling Information

•Store in a ziploc bag in the refrigerator for maximum life.

•A few drops of Anti-Bacterial Cleaner can be added to the Slime to minimize formation of mould and extend the lifetime of the Slime.

•Wash hands before using slime to minimize mould growth as well.

•Keep off carpets and furniture as it can stain.

•Borax is toxic in large doses.

Slime

Slime is very easy to make, but has some unusual properties. You will be making some slime today and seeing how it behaves when you stretch it. The slime is non-toxic, so you can take it home in a plastic bag if you want.

The reaction that forms the slime: the borax crosslinks the PVA.

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