Homeschool Creations

Sunday, August 1, 2010

Making Raisins Dance ~ Science Sunday

This experiment almost ended up being a total flop. I thought we had all the needed materials, but didn’t take into account the fact that the soda had been shaken by a certain 5 year old and therefore was missing a key part needed for the experiment.

Carbonation.

Fortunately, I have some children that have been paying attention during these experiment times and came up with an alternative idea that WORKED. Hallelujah…something is sinking in!

Question of the Week…What will happen to raisins dropped into a glass of clear soda? 

Items we used for this experiment:

~ two clear glasses

~ clear soda {Sprite, etc…}

~ raisins

~ water

OR if you have a 5 year old who can’t keep his hands to himself….

~ two clear glasses

~ baking soda

~ vinegar

~ water

~ raisins

Predictions and Experiment…

Each of the kids made a prediction about what they thought would happen when the raisin was dropped into a glass of soda ~ would it melt away to nothing, sink to the bottom, move up and down, or float and stay at the top? We marked our answers on our record sheets and started experimenting.

First we tried putting some raisins in a glass of plain water. They sank to the bottom of the glass and sat there.

raisin experiment

We poured the soda into the glass and then dropped some raisins in.

Nothing.

Our soda was highly non-carbonated and offered little support. Before mutiny began we talked about WHY the experiment didn’t work and what we could do to change the results. The kids all suggested using baking soda and vinegar together, so we put some water in another glass, added some baking soda, poured some white vinegar into the glass and added our raisins.

And the raisins danced!!

raisin experiment

The Nutshell Reason…

Raisins will sink because they are more dense than water. The soda has carbonation {carbon dioxide} and forms bubbles of the gas. Some of the bubbles attach themselves to the raisins and float to the top of the water/soda. When they pop, the raisin will fall to the bottom of the jar.

 

After the Experiment…

When we were finished, each of the kids drew a picture of the experiment. In case you can’t read it, McKenna’s little girl watching the experiment is saying ‘Cool’ and ‘Wow’. {grins}

raisin experiment

Note to self…do not turn your back on your 5 year old for a split second when the container of baking soda is left on the table. Or your house and your child may look like this:

baking soda mishapbaking soda mishap   

How to Do Science Experiments with Children Resource: How to Do Science Experiments with Children is available from Amazon and you can also check it out {and do some of the experiments} using Google Docs! The experiments use easy-to-find objects and also include record sheets for kids to fill out with their predictions and experiment results. Each experiment also includes teaching tips and explanations…which are rather handy! :) Don't forget to check out some other great science ideas at Science Sunday hosted by Ticia at Adventures in Mommydom.

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17 Comments:

  • Very cool! We did this with little pieces of thin pasta - works the same way =)

    By Blogger MaryAnne, At August 1, 2010 at 8:22 AM  

  • I have heard of this experiment before, but have not done it yet. I love the fact you set up your post with the scientific method steps. I love your student's sketches. The baking soda incident was precious. Lovely post.

    By Blogger Phyllis, At August 1, 2010 at 9:16 AM  

  • Bwahahahahaha - love the picture of your five year old! But, how exciting that the kids came to the rescue of the experiment - you can't ask for better than that.

    By Blogger An Almost Unschooling Mom, At August 1, 2010 at 9:50 AM  

  • Oh my gosh this is so funny because i am doing this exact experiment in a sunday school class next weekend! hahaha! Its called "Raisin for Bible Study". Get it ;) Glad to hear it works well! Or would have if you couldve used the Sprite ;)

    By Blogger Rebecca, At August 1, 2010 at 2:38 PM  

  • LOL...looks like sceince experiments around here with my 4 year old participating! We've done the raisin experiment before...pretty neat!

    By Blogger Kara, At August 1, 2010 at 3:05 PM  

  • That is so true about the baking soda.

    Baking soda and vinegar is my kids solution to all experiments.

    By Blogger Ticia, At August 1, 2010 at 4:03 PM  

  • Once again, I am convinced your 5yo and my 6yo would be best buddies - and that even more importantly, that they should probably never be allowed to meet! Oy vey! They trouble the two of them would be sure to create, given that one on one they come up with so many creative ways to make messes and stress their mommies!

    Thanks for the chuckle, and the "I know how it is" moment ;)

    By Blogger Jennifer, At August 1, 2010 at 6:33 PM  

  • Fabulous! I love your kids' faces, as they watch the raisins!!
    We've done this before, and will plan to do it again this week. Thanks for the inspiration!!

    By Blogger Living Creatively, At August 1, 2010 at 7:33 PM  

  • oo nice job saving the experiment! Love the turn the back pictures :-)

    By Blogger Lindsay, At August 1, 2010 at 7:42 PM  

  • love this experiment, and your house sounds like mine =0)

    By Blogger cooperkelly4, At August 1, 2010 at 8:14 PM  

  • Fun experiment! Your kids are so smart to think of using baking soda and vinegar!

    By Blogger Cindy, At August 1, 2010 at 9:39 PM  

  • I love the idea of dancing raisins. I'll have to remember it for when N is a little older. I just wanted to let you know that your "Y" alphabet cut and paste sheet has a small typo. The "Yy" is an "Oo". Thanks for making all of your printables and sharing them. It is really a huge help!

    By Blogger Smileyhappychan, At August 1, 2010 at 11:27 PM  

  • I really like how you "recovered" this experiment - it's almost as if you designed it this way. The last picture made me laugh - you have a very curious scientist on your hands.

    By Blogger Raising a Happy Child, At August 2, 2010 at 6:53 PM  

  • I love it. I can't wait till my kids are a little bit older to do silly science like that. They are only 2.5 now (twins) but we still do enough silly stuff.

    By Anonymous polwig, At August 2, 2010 at 11:19 PM  

  • I love it. I can't wait till my kids are a little bit older to do silly science like that. They are only 2.5 now (twins) but we still do enough silly stuff.

    By Anonymous polwig, At December 15, 2010 at 12:59 PM  

  • I love the idea of dancing raisins. I'll have to remember it for when N is a little older. I just wanted to let you know that your "Y" alphabet cut and paste sheet has a small typo. The "Yy" is an "Oo". Thanks for making all of your printables and sharing them. It is really a huge help!

    By Anonymous Smileyhappychan, At December 15, 2010 at 12:59 PM  

  • Very cool! We did this with little pieces of thin pasta - works the same way =)

    By Anonymous MaryAnne, At December 15, 2010 at 12:59 PM  

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