With 2 simple ingredients you have in your kitchen you can quickly and easily make your own plastic milk! Kids are going to be super impressed with this fun, hands-on Milk Plastic project! With this very simple science experimentfor kids, you can turn milk into plastic! This milk and vinegar experiment is perfect for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders too. Simply print pdf file with milk and vinegar experiment worksheet and you are ready to start this fun science experiment with milk!
Did you that before plastic was made from petroleum it was made from milk! In the early 1900s milk was used to make beads for jewlery and buttons. I love doing science experiments that impress kids! Not only are they eager to learn, but it stretches their little minds. Today’s easy science experiment is going to really impress your kids! They are going to change milk into plastic. The best part is this plastic milk is super simple to make and has such a great WOW effect for children of all ages. Try this turning milk into plastic with preschoolers, kindergartners, grade 1, grade 2, grade 3, grade 4, grdae 5, and grade 6 students. Whether you are a parent, teacher, or homeschooler – this vinegar and milk is a must try at home and in the classroom.
Milk and Vinegar experiment worksheet
Milk Science Experiment
All you need to try this simple milk activity are a few simple materials you already have in your kitchen:
- 1 cup milk
- 4 Tablespoons white distilled vinegar
- food coloring (optional)
- sprinkles or glitter (optional)
- sauce pan
+plastic +made +of +milk
To start out with you are going to heat up 1 cup of milk to almost boiling in a saucepan or microwave it for 90 seconds.
Hint: I suggest using non-homogenized milk if possible for better clumping
Take the pan off the heat and add 4 Tablespoons white vinegar and stir for 1 minute. You will see the milk separate and clumps form.
Milk into plastic
Now pour into a strainer to get rid of the extra liquid.
Turn milk into plastic
This is what you are left with. Once they are cool enought to touch you can rinse the milk chunks and then press them together. Now wrap them in a paper towel and sqeeze out any extra water.
You have two choices of WHEN to color your milk plastic. Put a drop or two of food coloring in several small bowls and pour the milk in them just after you’ve added the vinegar; stir. Or you can add it once you have rinsed the chunks and squeezed out the extra liquid; you can also add in glitter.
Vinegar and milk
Spoon out your clumps from the strainer and pat dry with a paper towel. The more liquid you pat out the stronger plastic you will make.
The mixture can be formed into a ball and pressed flat. I suggest using a cookie small cookie cutter shape your mixture. Press down until it is smooth.
Milk and vinegar experiment
This time we decided to make pretty beads for a fun necklace craft.
Use toothpicks to make holes to make beads for necklaces.
Place on paper towels to dry for at least 2 day.
String beads onto yarn to make a pretty necklace craft.
The milk plastic is durable and such a fun DIY necklace craft for kids they can make with science!
Another ideas is to turn this into more of an experiment by testing different fat percentages of milk such as fat-free and low-fat varieties. You could even test different ratios of vinegar to milk. How about trying a different acid such as lemon juice; would that turn the milk into plastic?
Vinegar and milk chemical reaction
Wondering about the science?
No, this milk and vinegar experiment does not produce real plastic. You made a substance called CASEIN which occurs when the protein in the milk meets the acid in the vinegar. As the casein in milk does not mix with the acid, the molecules move to join forces to make the casein plastic which forms a plastic-like blob that you can strain and mold.
When the plastic is dry, it is hard, shiny, and durable.
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Plastic milk experiment worksheet
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