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Wild Physics & Cool Chemistry Laboratory
Make hyperlaunchers, growing moon balls, slime monsters and fart putty! Learn about Force, Mass, Acceleration and more whilst having fun!

Age Grading: 10+ Years
Product Code: WS/31

Detailed introduction
  • Combines all the creative fun and science of the Weird Slime Laboratory and Hyperlaucher Rocketballs kits, plus new and exciting activities ONLY in this kit.
  • Explore energy transmission, shock and momentum. A Big Force put into a tiny mass = huge acceleration. Make a wide variety of bouncy and drippy, clear and coloured gels and slimes for different effects.
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    Nerd Alert provides loads of background information we couldn't fit in the booklet.
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    Email us your idea (make it short). Describe each step so someone else can do it too. And send two or three pictures.
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    Q1. Removing Slime from clothing?

    A1. 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.

    Q2. My goo dosent stretch or mould, I think it is because I put too little water into the powder, what should I do?

    A2. 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?

    Q3. The bath doesn¡¦t work!

    A3. 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.

    Q4. My daughter has run out of the sodium alginate working solution. Am I able to purchase more from your company? If not where can I purchase this from?

    A4. 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.

    Q5. What¡¦s wrong with these experiments?

    A5. 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.

    Q6. My Fart Putty won't fart! What is wrong?

    A6. 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.

    Q7. The balls didn't bounce as expected!


    These are some possibilities that might solve the query :

    1. Maybe she is dropping them onto a bouncy wooden or lino/vinyl floor. We need to use very solid, very hard surface: eg concrete or ceramic tiles, or the energy in the balls is dissipated.

    2. It takes practice to let the assembly slip from the fingers and fall totally vertically. A few degrees off vertical and a lot of energy is lost. So keep practicing. When you get it just right - get ready for a mind boggling surprise.

    3. Maybe they are still sticky when she is dropping the assembly. Most of the balls' energy will be lost trying to pull themselves free. So let the surface dry enough so they don't stick together when pushed together by hand. NOTE - please store them in a plastic bag in the fridge so they stay bouncy. Totally dry balls go hard as rocks and also don't bounce.

    4. Loose bits of granules around the 'collars' of the balls reduce the energy transfer efficiency from ball to ball. Snip off ragged bits with sharp scissors if they wont come off with a spoon.

    Q8. The granules stuck to the moulds and the hyperlauncher balls didn't come out properly/the hyperlauncher balls split in half.


    SOLUTION 1: The best hyperlauncher balls are made by very tightly packing the moulds. Loose packed granules tend not to stick to each other so well and may stick to the mould. Also grip the mould halves tightly under the water. They do swell, and do try to push the mould apart. This is all good for making hyper bouncy balls.

    SOLUTION 2: Smear cooking oil around the inside of the mould. Very little is needed, or it interferes with the water permeation. Then, when the balls are ready for use, a smear of oil on the stick shaft helps reduce friction. Ideally we do not use oil as if it is misapplied it can 'disable' water access to the granules.

    Q9. If you forgot to keeping bouncy balls in a plastic bag in the fridge and the balls went hard!!


    Now, we have managed to revive some of our rock hard balls that seem to hide in the corners Dr WILD's lab!
    Try soaking them in a glass of cold water in the fridge for a while. Depending on how hard the balls are - this may take an hour or two or a day. The aim is to re-gel the crystals both in the exterior and interior of the ball. But not to dissolve the crystals. Squeeze them every now and then until you can feel elasticity has returned. Then leave them out for the surface only to dry so it is not tacky. Then try using them again.
    Don't use hot water or they quickly get coated with a slimy sort of glue - which in itself is totally harmless and very interesting : it is the polymer dissolving. But the balls will stick together when bounced. If they have been totally dried out for a long time, sorry ... they do tend to stay as rocks with a gluggy exterior after long soaking.

    Q10. Why the slime can¡¦t get gelled?

    A10. 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!

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