Published on November 26, 2008
When you seen this pen it indicates a 0me for you to write down diﬀerent informa0on about this ac0vity. This informa0on will be needed for you to complete an experiment report about making slime
Making Slime Making Slime is a demonstra<on of how certain polymers are eﬀected by other chemicals, such as 'cross‐linkers’. Polymers are used in nearly everything these days, such as most kinds of plas<cs, nylon, and clothes. We are going to use a borax solu3on (sodium tetraborate) as an example of a 'cross‐linking' substance that connects the polymer chains together . (using a PVA glue as our Polymer) Write a Hypothesis based on the above informa0on before you con0nue Use the words in bold in your Hypothesis
SAFETY FIRST • Not to be fed to your pet or baby brother. • Not good for leaving in carpets or on furniture overnight. • To keep almost indeﬁnitely, leave in zip‐loc bag in refrigerator • Not a bad idea to wash hands before (so it doesn't grow mold) and AKer (so mum will let you eat dinner)
Collect the following materials 3 teaspoons 10% polyvinyl alcohol 2 tablespoons of Borax (sodium tetraborate) Water Ziploc® or other sealable plas<c bags CraK s<cks (icy‐pole s<cks) A jar A disposal cup to mix all the ingredients Food colouring Write a descrip0on of what the Glue and Borax look like. Include whether it is a Liquid or a Powder and the colour is it
How to do it 1. In the cup, mix an equal quantity of glue and water. 2. Add a few drops of food colouring. 3. Mix well with a icy-pole stick. Write down a description of your new solution. 4. In the jar combine a tablespoon of borax powder with a cup (250ml) of water - make a saturated solution of borax. 5. Screw on the lid of the jar tightly and shake the mixture well. 6. If all of the borax powder dissolves, then you need to add a bit more. When you get to the point where no more borax will dissolve the solution is saturated. Write down a description of your new solution. 7. Now, add about two tablespoons of the borax solution to the cup with the glue and water mixture and stir quickly. 8. The resulting mixture should be slimy or gooey not sticky
When you have ﬁnished exploring • You can save your slime for a long <me by puXng the 'stuﬀ' into sealable plas<c bags. • Dispose, Clean and Return all equipment Note: • If your slime dries out, you can add a bit of water back into it. • If it gets too dry, you'll have to start over. Write a descrip0on of what the slime looks and feels like
Now for the SCIENCE part.... This POLYMER is unique because it has quali<es of both a solid and a liquid. It can take the shape of its containers like a liquid does, yet you can hold it in your hand and pick it up like a solid. As you might know, solid molecules are <ght together, liquid molecules spread out and break apart (drops) POLYMER molecules CHAIN themselves together (they can stretch and bend like chains) and that makes them special. The polymer you made should be kept in a sealed plas<c bag when you aren’t playing with it. Reﬂect on your hypothesis and the informa0on about polymers to write a conclusion about making slime.
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