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17 mars 2014 1 17 /03 /mars /2014 09:39
Dry ice bubble by Mickaël & Sylvain
Dry ice

 

Materials

 

  • Equipement

We use : -Gloves

               -(Transparent) Basin with a large

               -Strip of fabric (cotton)

               -Graduated cylinder

               -Small Dish

               -Spoon

 

  • Substances

We use : -Solid Carbon Dioxide

               -Water

               -Dish Sorp

               -Sugar

Attention

It's very cold, his temperature is 78.5°C.

If you touch it, your hands can disappear !

Experiment

  1. Pour 50mL of water in a large jam pot.

  2. Add 10g of sugar. Mix the ingredients.

  3. Add 40mL of dish soap. Do not stir !

  4. Add 20mL of glycerin. Stir gently (not too fast because bubbles will appeared !)

  5. Add 80mL of water. Stir again.

 

Attention

  1. Fill 2/3 of the basin with water.

  2. With your oven mitt, take a piece of dry ice (with the gloves, of course) and put it gently in the water. Do not throw it !

  3. Dip your fabric in the soap mixture.

  4. Stretch it and slowly rub it along  the edge of the basin in order to create a single bubble.

  5. Wait for the bubble to grow and burst.

  6. You can do it again if you have the time. (you can do the experiment again replacing water by a soft drink with quinina to observe under ultraviolet light)

 

Conclusion

It produces a big bubble :D.

 

 

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English Classes @ Victor Schoelcher (77 - Torcy)
17 mars 2014 1 17 /03 /mars /2014 08:58

 

 
 
 

 

 

 

 
Dry Ice
 
 

 

 

 

 

 

 

Materiels :

 

Gloves, Transparent basin with a large rim, Strip of fabric(cotton), Gratuated cylinder, Weighing scale, Small dish, Spoon, Solid carbon dioxide, Water, Dish soap, Sugar, Glycerin and U$!

Experiment :

 

 
The soap mixture :
Pour 50 mL of water and add 10 g of sugar and mix the ingredients in a large jam pot. Add 40mL of dish soap. DO NOT STIR ! Add 20 mL of glycerin. Stir GENTLY ! Add 80mL of water.Stir again.
Now let's make a giant dry ice bubble !:
Fill 2/3 of the basin with water. With your oven mitt, take a piece of dry ice put it gentle in the water. Do no throw it ! Dip your fabric in the soap mixture. Strech it and slowly rub it along the edge of the basin in order to create a single bubble. Wait for the bubble to grow and burst.
 

 

Observation:

It creates a cloud. The cloud is made of water because anhydrous copper sulfate becomes blue.

Conclusion :

 
 

 

In a boiling water, there are changes of states. The Sublimation (the solid is turn in gas), Vaporization (the liquidis turn in gas) and Condensation (the gas is turn in liquid).

 

 

 

 

 

         Man-Chan and Pineapple

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17 mars 2014 1 17 /03 /mars /2014 08:55

Dry Ice

 

             For makes this experiment, we need :     - gloves

                                                                         - basin with a large rim

                                                                         - strip of fabric

                                                               - graduated cylinder

         - weighing scale

          - small dish                           

          - spoon

          - solid carbon dioxyde

         - water 

         - dish soap

          - sugar             

                                                                                              - glycerin                        

       

 

 

BUT BE CAREFULL !!!!!!!!!Never touch dry ice with barehands or skin because dry ice temperature is  cold at -78.5 °C, so handledry ice with care and wear protective cloth like an oven mitt.

 

                                              

 

      .

                             

 

 

 

Protocol : - We mix 50ml ofwater, 10g of sugar, 40ml of dish soap, 20ml of glycerin and                          again 80ml of water.

                - After, we let's make a giant dry ice bubble.

                - Now, we fill 2/3 of the basin with water.

                - Next, we take a piece of dry ice and put it gently in the water.

                 - Stretch dish soap and rub it along the edge.

                - Then wait for the bubble to grow and burst.

   

 

                                               

Changes of states

 

                      

 

Conclusion : - The dry ice is a solid carbon dioxyde.

                     - Thanks to anhydrous copper sulfate, we know the cloud is composed                         of water.

 

 

                 

                  

 

 

 

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17 mars 2014 1 17 /03 /mars /2014 08:54

For the equipement, you need : gloves, (transparent) basin with a large rim, strip of fabric (cotton), graduated cylinder, weighing scale, small dish, spoon.

As substances we needed : solid carbon dioxide, water, dish soap, sugar, glycerin..

 DRY ICE BY INDIANA AND HELOISE 

 

For the equipement, you need : gloves, (transparent) basin with a large rim, strip of fabric (cotton), graduated cylinder, weighing scale, small dish, spoon.

As substances we needed : solid carbon dioxide, water, dish soap, sugar, glycerin.

When we add 50mL of water, ,10g of sugar, 40mL of dish soap, 20mL of water and 80 mL again it creates a big bubble. To identify the prescence of liquid water we use anhyfrous copper sulfate (it becomes blue in the prescence of water)

Observations :

It look like an ice block. It's made of carbon dioxide. It's extra cold, it's temperature is -78,5°C. When we put wateronh it, it creates a cloud. The cloud is made of water became anydrous copper sulfate becomes blue.

 

 

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17 mars 2014 1 17 /03 /mars /2014 08:43
Dry ice bubble by Luca and Lucas

 

(: Dry ice bubble :)

(science experiment 3)

 

Equipment :

  • Gloves
  • (Transparent) basin with a large rim
  • Strip of fabric (cotton)
  • Graduated cylinder
  • Weighing scale
  • Spoon

 

Substances :

  • Solid carbon dioxide
  • Water
  • Dish soap
  • Glycerin

 

Safety :

Dry ice is extremely cold : -7.5°C !!!

NEVER TOUCH IT WITH BARE HANDS or SKIN !

If you touch the dry ice, you'll cause injury similar to a burn.

 

Experiment :

First, we are going to prepare the soap mixture.

 

  1. Pour 50mL of water in a large jam pot.
  2. Add 10g of sugar. Mix the ingredients.
  3. Add 40mL of dish soap. Doesnt stir !
  4. Add 20mL of glycerin. Stir gentli (no too fast because bubles will appared !)
  5. Add 80mL of water. Stir again.

 

Now, let's make a giant dry ice bubble!

 

  1. Fill 2/3 of the basin with water.
  2. With your oven mitt, take a piece of dry ice (with the gloves, of course) and put it gently in the water. Do not throw it !
  3. Stretch it and slowly rub it along  the edge of the basin in order to create a single bubble.
  4. Wait for the bubble to grow and burst.
  5. You can do it again if you have the time. (you can do the experiment again replacing water by a soft drink with quinina to observe under ultraviolet light)

 

CONCLUSION

CONCLUSION

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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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17 mars 2014 1 17 /03 /mars /2014 08:31

 

We need :                                                

  • gloves                                                    
  • basin with a large rim
  • strip of fabric
  • graduated cylinder
  • weighing scale
  • small dish
  • spoon

Substances :

  • solide carbon dioxide
  • water
  • dish soap
  • sugar
  • glycerin

Caution!!! The ice is very very cold at -78.5°C!!!

Protocol :

Stir sugar, glycerin, water and dish soap with spoon. Fill a basin at 2/3 of water and put a piece of dry ice in a basin. Soak a strip of fabric in the mix and pass it on the rim of the basin.

Observations :

The mix creates a single bubble on the rim of the basin and it seems the water is boiling. At around 40 seconds it explod.

Conclusion :

The experiment shows different changes of states :

  1. The solid carbon dioxide becomes gas, it's sublimation
  2. The gas becomes liquid, it's condensation.

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17 mars 2014 1 17 /03 /mars /2014 08:29

Dry Ice experiment !

 

                               For this experiment, we used :



Substances : solid carbon dioxide, water, dish soap, sugar, glycerin

 

Equipment : gloves, basin with a large rim, strip of fabric (cotton), graduated cylinder, weighing scale, small dish, spoon

 

 

1. Mix 50 mL of water and 10 g of sugar in a large jam pot.
2. Add 40 mL of dish soap but do not stir !

3. Then add 20mL of glycerin and stir gently (don't make bubbles).
4. Finally, add 80 mL of water. Stir again.


For make a giant dry ice bubble :

1. Fill 2/3 of the basin with water.
2. Take a piece of dry ice with your oven mitt and put it gently in the water, do not throw it !

3. Soak your cotton fabric in the soap mixture.
4. Rub slowly it along the rim of the basin.

5. when you created a bubble, wait for that grow and explodes.

 

Observations :

Dry Ice looks like an ice block. It's made of solid carbon dioxyde. It's extra cold, its temperature is -78,5°C.
When we put water on it, it creates a cloud which grows up and explodes.
The cloud is made of water because anhydrous copper sulfate becomes blue.

 

Good bye ladies and gentlemen and thank you for watching our video !
By Emilie and Chelsea ! :)

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17 mars 2014 1 17 /03 /mars /2014 08:28

Dry ice

 

Safety : Dry ice temperature is extremely cold at -109.3 °F (-78.5 °C). Always need to wear a protective cloth and oven mitt. NEVER TOUCH IT WITH BARE HANDS OR SKIN. A contact with your skin will freeze your cells and cause injury similar to a burn.

 

Material :

          Equipment                                                               Substance

Gloves                                                                          Solid Carbone Dioxide

(Transparent) basin with a large rim                                Water

Strip of fabric (coton)                                                    Dish Soap

Graduated cylinder                                                        Sugar

Weighing Scale                                                             Glycerin

Small Dish

Spoon

 

Protocol : First we are going to prepare the soap mixture, put it in the jam pot :

                - 50ml of water

                - 10g of sugar

                - 40ml of dish soap (don't stir)

                - 20ml of glycerin (stir gently)

                - 80ml of water stir again

                Fill 2/3 of the basin with water. With your oven mitt take a piece of dry ice

                and put it in a water. DON'T THROW IT. Dip your fabric in a soap mixture.

                Stretch it and slowly rub it along the edge of the basin in order to create 

                single bubble.

 

Observation : What does dry ice look like ? What is it made of ? What are the

                         characteristics of dry ice ?

                         It look like an ice cube It's made of water and solid carbon dioxyde.  

                        The temperature is -78.5°C.

                        What happens when you put water into it ?

                        It creates a cloud.

 

Conclusions : To identify the presence of liquid water we use anhydrous copper sulfate (it becomes blue in the presence of water). And when we put the dry ice into the water, it's states changes 3 times. First it vaporize,  next it sublime and at the end the steam water becomes a cloud again.

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English Classes @ Victor Schoelcher (77 - Torcy)
16 décembre 2013 1 16 /12 /décembre /2013 09:38
The Slime

 

 
Materials :

Plastic glasses, a spoon, ultraviolet light, graduated cylinder, borax, polyvinyl alcohol, coloring substances and quinina.

 

Observations :

-The slime is elastic and slimy.

-It takes the shape of the glass.

-It takes a few minutes for to fit perfectly the glass.

-It becomes glowing and it diffuses ultraviolet light.

-The slime has more characteristics of a liquid than a solid.

 

Experiment:

We mix borax, polyvinyl alcohol and colorant in three tubes. In the fourth, we mix quinina, polyvinyl alcohol and borax.

The colorants are : eosin, fluorescein and methylene blue.

 
Conclusion :

The slime diffuses another source's light as a consequence, it's a secondary source.

It is a liquid.

 

 

IT IS DISGUSTING

IT IS DISGUSTING

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