World Play Day - 28 May - Activity 11

So, it’s Monday and also the second last blog post of this series for World Play Day. To cure some of the sadness, I have decided to go out with a bang and dedicate the next two days to the Mad Scientist in us all.

Get your old white shirts out and the safety goggles lurking in the garage, and dress the kids up as mad scientists – some hair gel to get the hair crazy and you are good to go.

Today’s post includes some cool foodie experiments, so let’s get cooking:


Chocolate Slime2

This is much like the gloop, play dough and other sensory activities, but this one you can eat – yum!

Chocolate Slime1

What you need:

  • 340g can of sweetened condensed milk 
  • 2 tablespoons chocolate syrup 
  • 1-1/2 tablespoons cornstarch

What to do:

  • In a saucepan over low heat, stir together the milk, chocolate syrup and cornstarch. 
  • Stir and heat until the mixture thickens. 
  • Remove from heat. 
  • Allow the chocolate slime to cool. Enjoy! 
  • When you are finished playing with the chocolate slime, store it in a sealed plastic bag in the refrigerator. Refrigerated chocolate slime is good for a day or two. 
  • You can clean up the edible slime with warm soapy water. Chocolate will stain some surfaces, so keep this slime away from clothing or furniture.

What science experiment isn't complete without some magic colours and some fizz?  The next two activities will satisfy even the most skeptical...


Rainbow Sloutions2

What you need:

  • Sugar or salt
  • Warm water
  • food coloring
  • tablespoon
  • 5 glasses or clear plastic cups

What to do:

  • Line up five glasses. 
  • Add 1 tablespoon (15 g) of sugar to the first glass, 2 tablespoons (30 g) of sugar to the second glass, 3 tablespoons of sugar (45 g) to the third glass, and 4 tablespoons of sugar (60 g) to the fourth glass. The fifth glass remains empty.
  • Add 3 tablespoons (45 ml) of warm water to each of the first 4 glasses. 
  • Stir each solution. 
  • If the sugar does not dissolve in any of the four glasses, then add one more tablespoon (15 ml) of water to each of the four glasses.
  • Add 2-3 drops of red food coloring to the first glass, yellow food coloring to the second glass, green food coloring to the third glass, and blue food coloring to the fourth glass. Stir each solution.
  • Rainbow Solutions1
  • Now let's make a rainbow using the different density solutions. 
  • Fill the last glass about one-fourth full of the blue sugar solution.
  • Carefully layer some green sugar solution above the blue liquid. Do this by putting a spoon in the glass, just above the blue layer, and pouring the green solution slowly over the back of the spoon. If you do this right, you won't disturb the blue solution much at all. Add green solution until the glass is about half full.
  • Now layer the yellow solution above the green liquid, using the back of the spoon. Fill the glass to three-quarters full.
  • Finally, layer the red solution above the yellow liquid. Fill the glass the rest of the way.

If you really want to get scientific, you can show your child that oil and water also separate, but unlike the sugar solution, even if you stir oil and water, they will not mix.
If you stir the sugar solution, it will mix, this is because sugar solution and water are miscible, while oil and water are not.
Oil is hydrophobic, which means it will repel any water based solution. Try this by dropping one or two drops of food colouring onto the oil. The food colouring will slide through and mix with the water, leaving the oil untouched – cool huh?


Fizzy Potions

Mad scientists aren't known for drinking tap water. The mad scientist craves fizz! This potion froths and fizzes and is available in the classic radioactive colors or tasty color-change formula. It looks vile and evil, but the fizzy potion is safe enough to drink and tastes better (in my opinion) than most cool drinks.

What you need:

  • mad scientist glass 
  • water 
  • food coloring 
  • baking soda 
  • vinegar/or clear fruit juice

What to do:

  • Pour a little water and baking soda into your glass. 
  • Add food coloring to get a nice deep color. 
  • When you are ready for fizzing, add a splash of vinegar. You can add more vinegar, baking soda, and food coloring to keep things going.
  • You can drink this potion, but it will taste like salty vinegar (ick).
  • Make It Taste Better and Foam Longer 
  • Can't stand the taste of baking soda and vinegar? Stir a small amount of baking soda into fruit juice. 
  • Add a splash of vinegar to initiate the fizz. 
  • Juices not only taste better, but they can maintain foam longer. 
  • Make it Change Color 
  • If you used fruit juice, did your potion change color when you added the vinegar? Many fruit juices (e.g. grape juice) are natural pH indicators and will respond to the potion's change in acidity by turning colors. 
  • Usually the color change isn't very dramatic (purple to red) - but it's still mad science skills.


Painted Bread3

This is just fun, and incorporates some painting and creativity, and some science and food.  What more could you ask for?

What you need:

  • A couple of slices of bread (white works best)
  • Food colouring
  • Milk
  • A paint brush

What to do:

  • Mix a couple of drops of food colouring into some milk (use different containers for different colours)
  • Paint on the bread
  • Painted Bread2
  • When your masterpiece is finished, toast or grill your bread
  • Yum.

Tomorrow we continue with this theme, doing some cool mad scientist experiments and making some cool stuff for the kids to keep and show off to their friends, so pop in tomorrow.

Until then, MWAHAHAHAHAHAHAHA (That’s my Mad Scientist laugh! Be Afraid).

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