How to create an exothermic reaction? – Live Experiments (Ep 40) – Head Squeeze

HeadSqueezer Huw James has a go at creating an exothermic reaction?

Endothermic and Exothermic reactions:

Elephant Toothpaste:

The Bloodhound Project:

Elephants actually brush their teeth?

What you need:
1 litre plastic bottle
Washing detergent
Active yeast
Hydrogen peroxide solution
Food colouring
Glass bowl
Rubber gloves

Sit the plastic bottle in the glass bowl
Put on your rubber gloves
Pour some hydrogen peroxide solution to the bottle
Add a little bit of washing detergent
Add some food colouring
Add some yeast
Give the bottle a shake

IMPORTANT: If you are doing this experiment please follow the instructions carefully

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Our resident science demo thrill-seekers will give the YouTube audience their big science treat each week with an experiment where you can find out how to make food dance, power a light bulb with household objects and create mega smoke rings!


41 thoughts on “How to create an exothermic reaction? – Live Experiments (Ep 40) – Head Squeeze

  1. Haha i think anything about 8c is good for us Brit's, anything about 20c/25c is just to much, it gets very humid very quickly and so becomes uncomfortable. Its about 13c here as i write this and its perfect for an out door drink. 

  2. hi, i am wondering, do you live in England? if so define hot. i am interested because i know someone who lives in England and i asked how the weather was and he said it was quite warm and i asked what the temp was and he said about 10c where i live the only time it gets below 10 is at 3 am in the morning in the middle of winter!!!! and in summer it can get up to 40

  3. I'm not an chemist, just a lowly engineer. But what is the yeast doing? Is it a catalyst or is it a reactant? You are not explaining clearly what the active yeast is contributing.

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