We love science time here at PALZ! Science teaches us to observe the world around us, ask questions, and come to conclusions about how the universe works. Take a look at this fun science project from Ms. Katie. When doing a project with your child, be sure to ask questions like “what do you think will happen?” and “why do you think that happened?” Observe textures (wet, dry, slimy, hard), count items (1 cup, 2 tablespoons), and name motions (stir, mix, knead, squeeze). Above all, have fun and don’t be afraid to get a little messy!
How to Turn Milk Into Plastic
Materials
- Milk
- Vinegar
- Cookie Cutters
- 1 cup measuring cup
- A tablespoon
- Strainer
- Paper towels
- Food coloring (optional)
Instructions
- Pour 1 cup of milk into a microwave safe bowl.
- Heat up the milk for about 1 minute and a half (making sure the milk is hot but NOT boiling.)
- Remove from microwave and add 4 tablespoons of vinegar.
- Begin stirring. The milk will begin to clump up, but keep stirring for about a minute.
- Pour the milk through the strainer and push down to get all the liquid out. The solids should remain in the strainer.
- Transfer the solids to paper towels and continue to squeeze out any remaining liquid. The more liquid you are able to remove, the sturdier your plastic will be so get those little hands squeezing!
- If you are adding food coloring, now is the time to knead it in.
- Mold your plastic using your hands or cookie cutters. Once shaped, it typically takes about two days to completely dry.
The Science Behind It
Milk is made up of proteins. These proteins are called caseins (kay-seens). When you remove the caseins from the milk, they clump together to form a plastic and can be used to make a variety of things including buttons or beads.
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