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Food Science Science Fair Project

Plastic Milk

Science fair project - Plastic Milk
Did you know that milk from the fridge can be made into plastic? How cool is that? Let's do this experiment to find out how!


The hypothesis is that heat and acid will cause a reaction in milk proteins.

Method & Materials

You will place skim milk in a pot, add vinegar, heat, and stir until lumps form. Then filter the solid from the liquid, add water and baking soda, and observe the results.
You will need skim milk, a beaker, vinegar, a heat source, baking soda, a funnel and filter paper, a stirring rod, water, and a graduated cylinder.


The heat and acid changed the properties of the milk. We observed a precipitation reaction and a neutralization reaction, which changed the milk from a liquid to a plastic-like substance.

Why do this project?

This science project is interesting and unique because it uses everyday items to create a glue-like substance.

Also Consider

Experiment variations to consider include using different types of milk (lowfat, whole milk, almond milk), adding different amounts of vinegar, and cooking the mixture at different temperatures.

Learn more

You can find additional information and details for this science project here. Have fun exploring!

Related videos

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Are you curious to see if milk can actually fix a broken plate? And that's not all, did you know that you can even make a plate or cup out of plastic milk? Let's watch this video and discover if it's possible to drink milk out of a cup made entirely out of milk!
Making LEGO figures out of milk might sound unbelievable, but the science behind Plastic Milk makes it possible! In this exciting video, you'll learn how to turn regular milk into plastic and how you can shape it into fun shapes like LEGO figures and dinosaurs. Imagine being able to create a whole set of fun figures using just milk and a few simple ingredients.
Have you ever run out of glue in the middle of a project and didn't know what to do? Well, don't worry! You can make your own glue with milk using a variation of the plastic milk experiment. Check out this video to see how it's done!
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