Slime Goo Lab

Kit Overview

Master polymer chemistry to make drippy and bouncy slimes and gels. Create Tadpole and Leech soup, Rat Guts Noodles, Jellyfish, Blood Clots and more. Workbench and tools included.

Create ghastly Blood Clots and Exploding Slugs. Grow some gruesome Tapeworms. Sniff our Rat Gut Aftershave Noodles. Breed flubbery tadpoles to give to your friends! Make Jellyfish, Blood Clots and more. Workbench and tools included. What can you invent? This kit does not use Borax.

Think like a Proton...always positive!

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Slime Goo Lab help

Slime Goo Lab FAQ's

We design the activities to be done in the order they are written in the booklet. Maybe your son just jumped ahead to the exciting stuff like Jelly Worms, avoiding the Bath page.
After making the stock solution of Alginate Slime on page 5, we then make the ‘Calcium Chloride Bath’ on page 6. This ‘bath’ will keep going for several activities ( even up to page 9) before it needs replacing. So the ‘bath’ is 3mls of Calcium Chloride solution made up to 30ml with water.

We are very sorry but we think alginate powder of our specific type is not available as retail item, and we are not allowed by compliance laws to sell it outside our kits. If you buy another kit, try diluting the working alginate solution by up to another third with water. It still makes gels – but they will need to be pickled a bit longer and they will be a bit softer. However, you can extend the fun and experimentation time accordingly!

If you run out of pickling solution – Calcium Chloride – it is available from major supermarkets hidden as crystals or a white lumpy powder inside the base of cupboard/closet moisture and damp absorbers. Open it up carefully, and avoid getting the powder on your hands. If you do – just wash it off. You will need to dissolve a teaspoon of it in a cup of water to make something like our pickling solution.

1. Silent Fart Putty is no fun – we agree. We do know if you have a small thumb, it is hard to get the air bubble under the putty to squeeze past while making a noise. The Fix: use two ( or more) fingers and some practice.
2. Fish eggs: the fish eggs we make are small and round, like caviar. About 3 to 5mm in size depending on the skill of the slime dripper person. If you made thick clear alginate slime on page 5, and the Pickling Bath on page 6, you should have got solid rubbery Fish Eggs on page 8.
3. The Doo Doos don’t bounce very high. But they doo bounce, especially when pickled to harden the alginate. The longer the pickle time the bouncier the doo doo.

The main aim is to trap an air pocket in the container under a solid plug of flubbery slime. Pushing a thumb into the air pocket makes the air burp as it escapes around the slimy plug. So what could go wrong?

1. Maybe you have a small thumb or finger. Bigger thumbs make a better seal and it makes a longer noise.

2. Or find a smaller container to push it into.

3. Maybe the slime is too stiff and not sloppy enough. Add more warm water and work it into the mixture. Leave it for 20 minutes.

4. Maybe the slime is too sloppy and not stiff enough. Keep stirring! If you added cool water – you’ll need to stir longer.

5. Not enough slime. You can actually mix half a sachet with up to 35ml warm or cold water. Stir for at least 10 minutes with warm water or up to 20 minutes with cold.

6. Maybe you polluted your Fart Putty! Salt, sugar and most other chemicals will all change the structure of the slime. Fart Putty needs clean water, clean beakers, clean hands and a slightly dirty sense of humour.

The fish eggs we make are small and round, like caviar. About 3 to 5mm in size depending on the skill of the slime dripper person. If you made thick clear alginate slime on page 5, and the Pickling Bath on page 6, you should have got solid rubbery Fish Eggs on page 8.
Here are some tips:

1.Is your Alginate solution thick and slimy? If it is watery, you may add a bit more Alginate powder to make it thicker and fluid(Not too much, just enhance the strength, it should not be used over half a sachet=2g). Please note there should not be lumps in the jar, it would turn out a bottle of clear solution.

2.Your Calcium bath in dish might be too weak, that it is over diluted, so please remake Calcium bath following the instruction, suck 3ml Calcium Chloride solution with pipette and squeeze it in beaker, then add water to 30ml level of beaker. YOU now have the perfect Calcium bath at working strength!

Break the lump into tiny bits.Put them in the beaker.Call AN ADULT NOW…
Then run the hot tap a while. Then trickle enough hot water to ONLY JUST cover the lumps.Stir like crazy. Squish with your hands too. It might just go stretchy for you.The slime does not go really gooey in cold water. So maybe thats what you did?

A Firstly, the liquid in the ‘worms’ is just alginate and totally safe! Secondly The calcium chloride solution works by immediately reacting and gelling the outer surface of the strand of slime, and then , more slowly gelling the liquid interior by diffusion.

Diffusion means the CaCl2 ( calcium chloride) molecules have to ‘elbow’ their way through the ever stiffening outer network of cross bonded gel molecules to get to the still liquid molecules inside the strand . Of course the thicker or more blobby the liquid strand, the longer it will take for the CaCl2 to work its way to the juicy middle part. So leave the fat worms in the bath for longer.

On top of that – warmer solutions tend to react more quickly ( molecules or particles move more quickly) and this will affect gelling time. So warmer solution = quicker gelling time.

And on top of that – if the CaCl2 solution has been used a lot already, the reactive Calcium particles (ions) might be more scarce in the bath – so gelling will be slower.

Also if the alginate is diluted more than we suggest – it will still gel – but thin worms will be more fragile. Or if it is not completely dissolved to make the slime , this means the alginate will not be quite as ‘strong’ and the worms may be weaker.

So in science speak: the variation in results can be to do with any combination of:
a) diffusion rate and the surface area /volume relationship of the string of liquid slime ( thick and blobby means more work and further to travel for the calcium to do before it gells stiff)
b) temperature of the liquids
c) concentration of the calcium chloride left in the bath
d) concentration levels of the original alginate slime
e) how long time you pickle it for
f) weird stuff in your water and beakers etc at home that we cannot control. BUT it will never make anything dangerous.

The standard solution to the problem is : if it is soft, scrape off what you can with the edge of a spoon or a butter knife. Then soak the area with hot water for a minute. If it is dried on may need to soak longer, then rub with soap and hot water while scraping gently ( jacket) or scraping deeply ( carpet)with spoon or knife to loosen any really stuck bits.