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Science Rocks!


Glue

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Sent in by:
Ashely of Norwood, MA

Get into a sticky situation.
Materials

Materials Needed


  • skim milk
  • baking soda
  • vinegar
  • measuring cup
  • measuring spoons
  • paper towels
  • rubber band

Instructions

Instructions


  1. Check with a grown-up before you begin.
  2. Did you know you can make glue from vinegar and milk? Here's how.
  3. Add 2 tablespoons of vinegar to 1/2 cup of skim milk. Stir them together and let the mixture sit for two minutes. The vinegar will make the protein in the milk stick together to form small white lumps called curds. The leftover liquid is called whey.
  4. Next, you'll need to strain the curds since you won't need the whey to make glue. To make a strainer, put a folded paper towel over an empty cup. Push it down in the center so it forms a bowl shape. Put a rubber band around the top of the cup to hold the paper towel in place. Pour the curds and whey into the cup with the paper towel. The whey will go through the paper towel and the curds will stay on top. Wait about five minutes for the whey to drain through the paper towel.
  5. Use a spoon to carefully scoop out the curds. Put them between two dry paper towels and press down to get all the whey out.
  6. Put the curds into another cup, stir in two teaspoons of water and then add one teaspoon of baking soda. The baking soda reacts with the vinegar that's in the curds, producing carbon dioxide. If you hold the mixture up to your ear, you can hear tiny bubbles popping. If this mixture doesn't look like glue, just add some water.


Now it's time for you to get gluey. Test out your new sticky stuff and tell us what you think. Tell us what it can hold and for how long. Can you stick a banana to a paper plate or a penny to a ping-pong ball? Make yourself a Stick-O-Meter to compare the stick factor of this glue with other stuff that sticks.

Some of your Results

Rananah, age 13 of Chicago, IL wrote:
I did it and it was awesome! When I did it for my 7th grade science expriment and I won 2nd place.

Niharika, age 12 of Bokaro, India wrote:
it was good and I brought that for the science fair, my teacher praised me for that idea!!

Rishitha, age 12 of Vizag, India wrote:
it was smelly but awesom glue

Kelsey, age 16 of Coushatta, LA wrote:
i did glue a few years ago for the science fair it was really fun nd cool

Rakshitha, age 12 of Singapore wrote:
oh it was awesome! I never knew I could make glue experiment it worked!

Hannah, age 11 of Beachwood, OH wrote:
I tried the glue. It worked but was kind of watery and grainy. I think I didn't drain the curds enough. For all you people out there, be sure to have LOTS of paper towels handy!!!

Jacob, age 11 of Fort Atkinson, WI wrote:
It worked. It sticked. didn't even loosen.

Simone, age 10 of Durham, NC wrote:
It was really sticky when I was finnish so I think that's a good thing but otherwise it went really good!

Richard, age 11 of Detroit, MI wrote:
It didnt work the first two time, but it did the third time.

Crazy Scientists, age 7 wrote:
The glue turned out really good. We stuck paddle pop sticks, wool and decorations onto paper using our glue. The glue stuck very well and the things were hard to get off.

Adrianah, age 10 of Muldrow, OK wrote:
at first it was watery but after I got it it turned out good.

Kelly, age 12 of KS wrote:
It didn't work, it took a long time and got messy. It was fun to make but didn't work!

S.S., age 12 of Quincy, MA wrote:
It awesome experiment. It goes very well.

Ericka of Mooresville, NC wrote:
I'm a teacher at a YMCA, and we have science and discovery time scheduled into our day, and Zoomsci is perfect! When we tried the glue experiment it was so much fun the kids really enjoyed it, not only did we make the glue but we used the stick-o-meter as well, the items we used were a bit different, we used Elmers glue, a glue stick, the home made glue, marshmellow fluff (because peanut butter isn't allowed) and gum that was softend with water and then moved around in between the fingers the home made glue really held up! It was neat and I would suggest this to elementary teachers because it's interesting and fun to get children involved.

Vallab, age 10 of Cupertino wrote:
It was so fun until I got into a sticky situation

Jade, age 10 of Fatima, QC wrote:
Didn't Work I follow all the insturctions..

Tina, age 16 of Daleville, AL wrote:
Well what happen was that the glue got really sticky and that it wa fun.

Zoai, age 11 of Whiteville, NC wrote:
When I did it I don't think it worked right. I tried to use it, because I had a project due and ran out of glue. I think I added to much of the water because it was very watery.

Erin, age 14 of Waldorf, MD wrote:
It worked for a minute then after a couple of minutes it became a bunch of floating liquids. Personally I think that this project was fun, but it stunk at sticking...

Kayla, age 12 of MA wrote:
The glue worked out well. It did stick and it did not take a long time to make. I am doing this project for the science fair and I think I will get a good grade. Thanks 4 the great idea and the glue wuz fun 2 make too.

Francise, age 10 of Bradenton, FL wrote:
The glue was sticky.

Nikea, age 11 of Chicago wrote:
i had a good time doing it. it was fun my mommy and my family did it. and I want to no if I can be on that show.

Kaya, age 10 of Wilkes-Barre, PA wrote:
it really turned into glue

Caroline, age 11 of Houston, TX wrote:
it didn't make as much as I thought it would. it kinda worked but not really. U thought of a cool experiment but it didn't work out so well when I had tried it for the first time but it might work if I try it again!!!

Shiloh, age 12 of Lancaster, TX wrote:
well number 1 it smelled bad but it worked out good

Nadiya, age 13 of Astoria, NY wrote:
I did it 4 a science project and the glue did stick a little but tyen it fell apart and about 2 days later it began to smell like something u dont want to smell. I wouldnt reccomend doning it but if you wabt u cud try something different. My teacher said maybe I should hav boiled it.

Keaton, age 7 of Audubon, IA wrote:
it stuck to the cup.

Luis, age 11 of Lawndale, CA wrote:
I did not make it but I did all the steps

Taylor, age 13 of PA wrote:
it worked fine! it was fun I am doing it for the science fair

Jamie, age 11 of Seattle wrote:
this science thing is so bad it doesn't even work i'd rather buy glue rather then waste my time making ti!!!


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