The Milk Rocks Experiment - Free Science Experiments

When I say ‘Milk Rocks’ I mean it literally. You can turn milk into a rock hard substance and best of all I’m guessing you already have everything that you need.

What Do I Need?

  • Microwave or hob to heat your milk (Adult to help out).
  • 1 pint of milk
  • White vinegar
  • Bowl, glass and a spoon
  • Paper towels
  • Dish cloth, elastic band (optional)
Milk Rocks - What Do I Need?

How Do I Do It?

STEP1 - Get an adult to help out with warming your glass of milk so that it’s warm but not boiling. Then pour your milk into your mixing bowl.

STEP2 - Add around 3 tablespoons of white vinegar into your bowl and stir it together.

STEP3 - Immediately your milk will start to change from a liquid to a weird gooey substance.

STEP4 - Make a little strainer with a dish cloth, elastic band and a glass. Pour your mixture through your strainer to separate the solid bit from your milk.

STEP5 - Use a paper towel to really dry out your ‘solid milk’ as best as you can.

STEP6 - Leave your gooey mess on a windowsill to dry out for a couple of days until you get your milk rock.

Milk Rocks - How Do I Do It?

What’s Going On?

Unbelievable that you can make rock-solid milk, right!?! This stuff was like plastic but before plastic was invented and now you’ve made your own, which is awesome.

Our vinegar is an acid and by adding acid to our milk we’re separating out the casein that’s always within milk from the rest of the milk. 

A big component of milk is just water and by separating out an ingredient called casein and getting it to dry we can turn our milk (or at least part of our milk) rock hard. 

When casein is allowed to dry it turns rock hard and you get your very own milk rock.

Milk Rocks - What’s Going On?
More Fun Please! - Experiment Like A Real Scientist!
  • What type of milk works best? Full-fat? Skimmed?
  • Does it have to be vinegar that you use? 
  • Could it be another acid? 
  • What about brown vinegar? 
  • What about lemon juice?
  • You could get creative with food colouring or glitter to create a super-cool milk rock.
Milk Rocks - Experiment Like A Real Scientist!
Want A FREE Science Experiment Book?

If you like fun science experiments then you'll love this FREE Science experiment book....

It's packed full of awesome experiments you can do at home with "stuff" you've already got. 

Your FREE Science experiment book is:

  • 5 Star Reviewed
  • Dragons' Den Approved
  • Yours completely FREE. 

Click Here to download your FREE copy now!

Your FREE Science Experiment Book!

Kids Party Coming Up?

If you like fun science experiments then you’ll love the Dragons’ Den winning Sublime Science Party. Check price & availability in your area and grab your FREE Kids Party Survival Guide right now!

Dragons Den Winning Science Party
Award-Winning Science Party

Home - About - Privacy Policy - Terms & Conditions - Contact


Copyright 2008-2022 - Sublime Science - All Rights Reserved - Registered in England and Wales, Company Number 6680269. Registered Address: The Sublime Science Lab (Unit4) Fernleigh Business Park, Blaby Rd, Enderby, Leicester LE19 4AQ - Call: 0116 380 0750

50% Complete

You Just Couldn't Resist!

There's some serious science behind why you just clicked! 

If you'd like more awesome science experiments then enter your email address below and grab your FREE science experiment book!

You'll get your FREE copy of 'Don't Eat Your Slime', weekly 'Top Secret Science Experiment Printables' and occasional awesome offers. Happy experimenting!

Close
50% Complete

(enter your email address below to get your FREE science experiment book)

YES, I Want My FREE Experiment Book!

(You'll get your FREE copy of 'Don't Eat Your Slime', weekly 'Top Secret Science Experiment Printables' and occasional awesome offers. Happy experimenting! 

Close