science

Elephant Toothpaste

One science experiment we have been wanting to try was Elephant Toothpaste. First of all my boys thought the name was hilarious and we had so many different theories as to why it was called that. Here's a few for you to have a quick laugh:

  • When we mix the ingredients together, an elephant will come out of the bottle brushing it's teeth
  • The reaction that the ingredients will make will have an explosion so big it's as big as an elephant
  • When we mix the ingredients, the shape of the toothpaste will look like an elephant 

And the one that we decided was the best... 

  • The reaction causes such a big overflow that the liquid that comes out is so big and it looks like toothpaste and there is enough there for an elephant to use! 

This experiment was fairly easy to do for the boys on their own once we did it once together. 

First make sure your children are wearings safety goggles for this science experiment. I bought ours at the dollar store for $2 and the boys loved them! They felt like real scientists. 

Here's what you will need for ingredients:

  • Hydrogen Peroxide (we used 3%)
  • Dry Active Yeast
  • Dawn Dish Soap 
  • Warm Water
  • Food Colouring
  • A narrow neck water or pop bottle
  • A funnel
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A couple of things to note. I tried to find a higher hydrogen peroxide (you can apparently get 6 and 12% but in Canada I could only find 3%.  I went to Walmart, a drug store and a beauty supply store and none of them carried it. I think the experiment still worked out great with the 3% but it would be cool to try with the 6% and see the difference! 

First measure out your yeast. Either using 2 tbsp or 1 packet, place it in a measuring cup (about 3/4 cup) of warm water. Push the yeast down into the water, and let it sit.

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While you are waiting, measure out 1/2 a cup of hydrogen peroxide using a measuring cup and a funnel and pour it into your bottle. It's best to use a narrow neck pop or water bottle for this experiment. 

We put our pop bottle into a glass container so it was contained and easier for clean up afterwards. You can also use a cookie sheet. 

Next add your food colouring.  Remember that your dish soap should be blue and it will change the colour too! 

Next add your dish soap. You can be pretty generous with this!

After you've added those ingredients, you are ready to watch science! Be ready.... 

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Mix your yeast ingredients slightly with a spoon and then pour it into the funnel and into your mix. Quickly pour all ingredients in and then remove the funnel and watch the toothpaste rise to the top and pour over the container. 

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Here's what happens: 

The foamy substance is created by the rapid decomposition of hydrogen peroxide by using the yeast as a catalyst. The sodium iodide (yeast) reacts with the hydrogen peroxide (H2O2) by removing an oxygen atom. This pretty much produces water and oxygen gas (H2O + O2). Then what happens is the oxygen gas produced gets trapped by the soap which results in the foam reaction. The reaction produces oxygen gas, water and iodine. 

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The foam is totally safe to touch (and so soft and somewhat puffy!) - the peroxide (H2O2) is broken down in the reaction - so there isn't any left.  It leaves behind water (H20) and oxygen (O2) only - so it's completely safe to handle. If you were to use the stronger hydrogen peroxide, I would do some research first before handling it. 

You can watch my boys do their first "official" YouTube video on their own where they are doing the Elephant Toothpaste Experiment to explain everything to you! I was SO proud of them and I love that my oldest son at the end of the video asks you to follow our channel and like our video....what a kid!! LOL. 

Happy experimenting everyone!! 

-Cassie 

Erupting Colours Experiment

One of our all time favourite science experiments is the erupting colours experiment.  This easy to do experiment can be done with items that you will most likely have in your home! 

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Impress your child with the knowledge too of what's happening when you mix the ingredients and explain to them how it all works! 

Here's what you will need:

  • White Vinegar
  • Baking Soda
  • Food Colouring
  • Small plastic or glass dishes (we used shot glasses from the dollar store)
  • A syringe or eye dropper (makes things feel more official too!) 

First line your cups up on the counter. Place a bit of baking soda in each one. Then place food colouring in each cup. Do NOT add the vinegar yet! 

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Place your vinegar in a small dish. Line up your containers on a cookie sheet and some paper so that you have an easy clean up when your experiment is done. Plus my kids loved seeing the different colours that exploded onto the paper. 

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Take a little bit of vinegar and place it in your eye dropper. Once you drop your vinegar into the baking soda/food colouring mix...watch the magic happen!

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Here's what happens (this is when you can look REALLY smart with your kiddos! ;) ...

When vinegar (dilute acetic acid) and baking soda (sodium bicarbonate) are mixed together, hydrogen ions in the vinegar react with the sodium and bicarbonate ions in the baking soda. The results in a first reaction that creates two new chemicals: carbonic acid and sodium acetate.

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The second reaction is a decomposition reaction. The carbonic acid was formed because of the first reaction immediately beginning to decompose into water and carbon dioxide gas. 

Just like carbon dioxide bubbles in a carbonated drink like pop, the carbon dioxide (that formed as the carbonic acid decomposed) rises to the top of the mixture. This causes the bubbles and foam you see when you mix baking soda and vinegar together! 

I love being able to see the different colours and seeing my boy's reaction each time we did it! 

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You can also watch our live video on Facebook when we did it live for our followers. Watch it HERE

If you're looking for other science experiments to do, check out the Bouncing Egg experiment HERE and the Walking Water experiment HERE. Science is a must around our house! 

NOTE: You will see how if you leave the baking soda and food colouring too long that it settles and doesn't explode as much and you must squeeze a lot of vinegar at once for it to explode good. 

I also suggest putting the food colouring on top instead of the bottom so that it explodes better! 

Our Easter Singles are here and a few of them are almost SOLD out already! Be sure to get yours and send a child a box filled with Easter crafts and activities! Check them out HERE

 

 

 

 

Walking Water Science Experiment

This science experiment is very easy to set up and requires only a few items around your house and has an awesome wow factor for your kids! 

Here's what you need:

  • 3 Glass Cups
  • Paper Towel
  • Water
  • Food colouring
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My boys love doing science experiments. They love guessing what will happen and making predictions.  I love seeing their awe and excitement when they see the experiments happening.  

Here's what you need to do: 

Place your 3 glasses of water on a flat surface. Put coloured water into the glasses in the two glasses on the outside, leaving the middle one empty.

Take one piece of paper towel and fold it into half and then another half and another half. Repeat with another piece. 

Place one piece of paper towel so it runs from the glasses with water into the empty one.

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Sit back and watch.

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As you can see, the water from the outside transfer from the two outside cups, through the paper towel and into the middle cup. With the colours we chose, you can see the yellow and red transform into the middle turning the water orange. So much fun to see their faces when they came down the next morning to find this! 

Bouncing Egg Experiment

This was one of our favourite science experiments! Our boys loved anticipating and waiting and observing...they sure do make great little scientists! If you want to amaze your kids and teach them a little science and have some fun, then this science experiment is for you!

**WARNING: This experiment does take a few days to get results...if you prefer for your child to see the end result without waiting that many days, show them the experiment only on the 4th day.

 

Here's what you will need:

  • Two eggs
  • Two glass glasses
  • Vinegar
  • A flashlight

First, place two eggs fully submerged in vinegar into separate glasses. The fun part of this process is comparing the two and watching to see what happens! Leave the eggs in the glasses for 3-4 days until the egg shells have completely dissolved. Have your kids tell you each day what they see and report what is happening to the egg each day.  

 

On day 4, carefully remove the eggs from the cup with a spoon.  Note that there is no shell left, but a waxy looking coating on your egg.  Get your kids to squeeze it carefully, and then drop it on the counter from about 2" high. Watch it bounce!! If you are looking to try an experiment with your egg, take it outside and do an egg drop where you increase the height by about 1" each time to see how high you can drop the egg from before it breaks...warning, this does get messy but it's so fun!!

 

The other thing our boys thought was SO cool was going into a dark room with a flashlight and shining the light behind the egg...being able to see the yolk inside and see how the egg was transparent was one of their favourite parts! SO fun!!

 

Good luck, have fun and enjoy with your little scientists!