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17 mars 2014 1 17 /03 /mars /2014 08:34

The cloud's dry ice

 

In the next video, you will see :

  • How to make a cloud with dry ice
  • What the cloud is made of 
  • How to make a bubble with dry ice
  • how to make an explosion with dry ice

 

Equipment/Substances : 

- Gloves                                                               - Solid carbon dioxide

- Basin with a large rim                                        - Water

- Strip of fabric                                                    - Dish soap

- Graduated cylinder                                          - Sugar 

- Weighing scale                                                - Glycerin 

- Small dish 

- Spoon 

 

Protocol : 

     To make a bubble with dry ice, you must : 

  •  Stir water, sugar, dish soap and glycerin 
  •  Put the dry ice in the basin with 2/3 of water
  •  Dip your fabric in the soap mixture and stretch it and slowly rub alobg the edge of the basin

       To make an explosion, you must :

  • Put the dry ice in boiling water (100°C)

 

Changes of states :

First, vaporisation hot water becomes gas, second sublimation solid carbon dioxide becomes gas and the third condensation 

Observation : 

  • The bubble grows up and explodes
  •  When you put some anhydrous copper sulfate under the cloud that's become blue

 

Conclusion : 

  •  The cloud is made of water 

The link to our video :

<iframe width="420" height="315" src="//www.youtube.com/embed/ZeXfMlfgN_g" frameborder="0" allowfullscreen></iframe>

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