Magical Moving Milk Experiment ~ Easy Science Experiments for kids

07/01/2016 8:00 am · 68 comments

by Sarah A Thrifty Mom

Science themed birthday party idea, Easy Science Experiments #KidsProjects #Science #EasyScienceExperimentsMy 9 year old LOVES to learn, understanding how things work and why they happen just fascinates her.  When she learned to read she did not want to read any of the books her friends were reading so I thought she did not like to read. That is till I noticed she was taking instruction manuals for her toys to bed and reading them, and cookbooks.  We got her a few science books and all of a sudden she would not put the book down… lol.  She did not get this from me, she got it from her Daddy.  But I am thrilled to have such a smart girl 🙂

So I should not have been surprised when she picked SCIENCE as the theme of her birthday party this year. We did a bunch of fun experiments with the girls and it actually turned out to be one of the most entertaining birthday parties ever.

Milk and food color experiment, what happens when you add soap... a magical thing starts to happen #KidsProjects #Science #EasyScienceExperimentsMagical Moving Milk Experiment

For this experiment you will need:

  • whole milk
  • pie tin or glass dish
  • food coloring
  • cotton swab
  • liquid hand soap or dish soap

Milk and food color experiment, what happens when you add soap... a magical thing starts to happen #KidsProjects #Science #EasyScienceExperimentsPour milk into the bottom of the pie tin, DO NOT shake the milk this trick does not work very good if their are bubbles in the milk. Drop food coloring into the milk.

Milk and food color experiment, what happens when you add soap... a magical thing starts to happen #KidsProjects #Science #EasyScienceExperimentsPut the cotton swab into the milk and see that nothing really happens, their is slight movement but nothing to impressive. Take the other end of the cotton swab and coat it with liquid soap. Put the coated cotton swab into the middle of the milk, don’t move it just watch what happens. The milk will magically start to move all on its own. Take it back out, add some more soap and put it in in a different spot. Watch the milk magically whirl and swirl around, it almost looks like a kaleidoscope.

Milk and food color experiment, what happens when you add soap... a magical thing starts to happen #KidsProjects #Science #EasyScienceExperiments

 

Why does this happen (Explained by Chemistry.about.com)

Milk consists of a lot of different types of molecules, including fat, protein, sugars, vitamins, and minerals. If you had just touched a clean cotton swab to the milk (try it!), not much would have happened. The cotton is absorbent, so you would have created a current in the milk, but you wouldn’t have seen anything especially dramatic happen.

When you introduce detergent to the milk, several things happen at once. The detergent lowers the surface tension of the liquid so that the food coloring is free to flow throughout the milk. The detergent reacts with the protein in the milk, altering the shape of those molecules and setting them in motion. The reaction between the detergent and the fat forms micelles, which is how detergent helps to lift grease off of dirty dishes. As the micelles form, the pigments in the food coloring get pushed around. Eventually equilibrium is reached, but the swirling of the colors continues for quite a while before stopping.

Milk and food color experiment, what happens when you add soap... a magical thing starts to happen #KidsProjects #Science #EasyScienceExperiments

More activities, projects and fun things to do with your kids.

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Watch a Local Race ~ Frugal Family Activities to do
Corn Starch Gak Science Project to do with kids
Color Collage with ads from the paper
DIY Chime Set ~ Music Fun For Kids
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Thanksgiving Crafts for Kids ~ Paper Turkeys
Easy Kid Games ~ Turn Easter Eggs Into Reading Games for Kids
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SNOW-DAY ACTIVITIES FOR KIDS ~ SNOWMAN COOKIES
NEW YEARS EVE ACTIVITIES FOR KIDS~ “GOODY BAGS”
DIY~ MEMORY MAKING CHRISTMAS DECORATION
LEAF BUILDING FORT ~ HOURS OF FUN FOR KIDS!
SHARPIE TIE DIE SHIRTS ~ EASY SUMMER ACTIVES FOR KIDS
FIREWORKS ~ JULY 4TH CRAFTS FOR KIDS, QUICK AND EASY
VALENTINE CRAFT FOR KIDS ~ HIDDEN MESSAGE HEARTS, QUICK AND EASY
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FROZEN Rice Krispy Treats
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HOW TO MAKE MEMORY PLATE
EDIBLE PAINTED BREAD 

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68 comments
Debbie Bessette
Debbie Bessette

I did this with my daughter then we decided to drop a piece of white paper on top of it, when you take it off it looks tie dyed we used them as card stock and made gifts. Use a heavy paper construction works best.

Shannon Grogan
Shannon Grogan

Such a fun project! I'm doing this with Wesley tonight

Christina Davis
Christina Davis

My 3 yr old girl is laughing w your boys! She says they are funny

A Thrifty Mom
A Thrifty Mom

My silly boys.... glad they thought they were funny!

Kristin Henard
Kristin Henard

Styrofoam plates are horrible for the environment and aren't recyclable.

Reham Nawaz
Reham Nawaz

My girls love doing this but with paper in a zip lock bag

Bonnie Bunny Fehr
Bonnie Bunny Fehr

With the different milks you can find which one isolates the dye the most and which one spreads it the dye more easily

Graciela Hambek
Graciela Hambek

Amazing! Cooper, Bella and Monet (like the painter) are dying to do this at home! Thank you!!

Kristi Dalberg
Kristi Dalberg

5-year-old Reese just crawled into my lap to watch!

Monica Rodriguez Wilson
Monica Rodriguez Wilson

I wonder if you can you do this with soy or rice milk? My kiddo is allergic to dairy. I might test it out.

Reham Nawaz
Reham Nawaz

Amaiyah and sorayah say this is amazing and want to try this with friend in the park

April Easton
April Easton

My 6 year Evan and 8 year old Fred and 3 year old Samantha are all liking this and now they want to do it

Bonnie Bunny Fehr
Bonnie Bunny Fehr

The speeds of the colors moving away changed with the fat content in the milk

Leah Sears
Leah Sears

We did this a couple years ago at your house

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