Plastic Milk!
‘Little Miss Muffet Sat on her Tuffet Eating her Curds and Whey”
But what are curds? This Experiment lets us milk turn into into a solid and make a batch of plastic milk so we shall find out!
You will need:
•skimmed milk
•white vinegar
•microwave proof bowl
•strainer/sieve
Equipment needed!
Method:
- 1. Add 4 teaspoons of white vinegar to one and half cups of skimmed milk.
- 2.Microwave the mixture for about a minute/ or heat over a stove to warm.
- 3. After a minute, the milk and vinegar will be separated into a liquid part (the whey) and the solid part (the curd)
- 4. Now, when you stir the milk, the solids become a “blobs.”
- 5. Strain the liquid off, you squeeze the blobs into one big lump. Squeeze out all the left over liquid.
Sieve the mixture!
- 6. Let it cool off, and then you can play with it. It feels like rubber.
- You can form the blob into shapes. If you leave it out, it will harden.
The Science bit
Here’s what happened to the milk. By adding the vinegar, you have created a chemical reaction which caused the milk to separate into two parts, a solid-the curds-and a liquid-the whey.The protein in the curds is what makes it act like rubber. A really simple experiment that gives you something very touchy and feely to do. It also makes a great sensory tool for little ones to play with.
Have fun!
7 Comments
Trackbacks/Pingbacks
- Show-and-Share Saturday Link Up! - [...] you ever wondered what exactly ‘curds and whey’ are in the “Little Miss Muffet” nursery rhyme? Science Sparks shows ...
- Science Sparks » Make glue from milk - [...] have looked at making ‘plastic milk’ before. This week we are taking it one step further and making [...]
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Very cool! My kids would like this!
Found you on abcand123learning’s Show & Tell.
Thanks for coming to take a look. Have a go, it is so easy!
what a fun experiment! i know my girls would find this interesting. thanks for sharing!
Thanks you. Let us know if you try it. x
We did something very similar to this in my 7th grade science class and to this day I can’t eat cottage cheese (it looked too much like it).
Ha ha! I hope we don’t put anyone else off! x
If you add enough vinegar, could you make something that won’t go off – i.e. could this be a new “type of playdough” could you make something with it? I have random thoughts, you don’t really have to answer that.
Thank you for joining Kids Get Crafty!
Maggy