Super Soft and Stretchy DIY Play-dough (DIY Silly Putty)

Good morning scientists! We just made some super soft play-dough that is also stretchy. Just a heads up this one is quite messy when you are mixing.

MaterialsSuper Soft and Stretchy Play-dough (1)



Ziploc bags

Measuring Cups (1/2 and 1 Cup)


Food Coloring


  1. Combined 1 cup of cornstarch and 1/2 conditioner in a Ziploc bag.

2. Add 5 drops of food coloring and close up the bag. Mix up the ingredients in the bag until it is all moistened.

Super Soft and Stretchy Play-dough (7)
3. Dump the bag out onto your work surface and knead the dough until it is fully mixed.
4. Enjoy playing with your new super soft and stretchy play-dough. To us it felt and acted like silly putty. Store in a Ziploc.

Talking Points

When we combined our ingredients we created a chemical reaction. A Chemical reaction occurs when you change a substance or group of substances molecular structure (Small part that makes the substance the substance). It creates a new substance. This change is know as a chemical change. Unlike a physical change or state change, in a chemical change you can’t put the substances back to its original forms (You can’t un-burn the toast).

In our experiment we changed the cornstarch and conditioner into a polymer. A polymer is a large molecule that has lots of repeats, it is basically a long chain of molecules. This is what gives our dough the ability to stretch out.

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