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Sunday, April 20, 2008

Slime Lab

Is it a solid or a liquid?
David wanted nothing to do with this.
Reading labels--Scott making sure there is no sugar in it. ;)
Not so sure about this.
OK! It's fun!
16 0unces of cornstarch and 1 1/2 cups of water per kid
and you got some


crispy said...

That one is fun...we have done it before.

Allana Martian said...

I used to have a recipe for slime and the kids loved it. I'll have to try yours. Great for a rainy day!

Permission to Mother said...

William's teacher left this message in his grade book. I thought you homeschoolers would enjoy the Science behind it. ANd I hope Mrs. H. comes back and joins us here!

I LOVED your mom's blog. It looks like you and your brothers (okay, maybe not your little brother) had a lot of fun conducting this experiment. Most students think this lab is the best one of them all. I hope you enjoyed it and I also hope it helped you get a better "grasp" on the different states of matter.

What you created is actually called a non-newtonian fluid, which is a fluid in which the viscosity (thickness or ability to flow) changes with the amount of pressure applied. The application of force - for example by stabbing the surface with a finger, or rapidly inverting the container holding it - leads to the fluid behaving like a solid rather than a liquid. More gentle treatment, such as slowly inserting a spoon, will leave it in its liquid state. Trying to jerk the spoon back out again, however, will trigger the return of the temporary solid state. A person moving quickly and applying sufficient force with his feet can literally walk across such a liquid (but DO NOT TRY THAT AT HOME). MRS. H.

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