*尋空之旅*

Team Members:

07林芷伶、14曾安婕、21葉妍歆

Balloon Blow-up

Steps:

1.用吸管把小蘇打粉倒進氣球裡

Pour the baking soda into the balloon with the straw.

2.在把氣球套在裝了醋和水的寶特瓶上

Stretch the open end of the balloon over the neck of bottle.

3.把氣球立起來讓小蘇打粉倒進醋裡

Hold onto the balloon at the bottle neck,and pick up the heavy part of the baking soda falls into the vinegar at the bottom of the bottle.

4.接著醋就冒出一堆泡泡然後氣球就鼓起來了

Then the vinegar appeared many bubbles and the balloon swelled.

By the way,because we had little vinegar, so our bubbles weren't as many as the other groups'.

Discussion

1.What happens to your balloon?

It blows up.

Though it isn't really big. 

2.What cause the result?

Because CO2 is the gass inside the balloon and it makes it blows up!

NaHCO3 + CH3COOH →  CH3COONa + H2O + CO2

That's what produced by baking soda and vinegar.

3.How can you apply this finding to everyday life?Or, can you create anything  based on this finding?

I think it could use in the fire extinguisher.

If it could produces CO2, then CO2 can let the fire got extinguished! 

Raisin City Music Hall

Steps:

1.搖動裝了汽水的寶特瓶接著再拍三下

Shake the bottle that is filled with soda and tap it for three times.

2.把葡萄乾丟進去

Throw the raisins in to the bottle.

3.葡萄乾似乎上下在跳舞

The raisins danced in the soda up and down.

Our soda was not airtight before we did the experiment, so the effect is not as good as our expectation.

But why? Let's figure out in the following question!

Discussion

1.Before you open your can of soda, what do you expect to happen?

Maybe bubbles will arise, I guess.

2.When you open the soda, what happens?

The raisins sink to the bottom of the bottle!

3.Please try to explain what makes the difference.

Because our soda was not airtight.

I think it's because of soda is produced with high pressure as an important element in it.

Without the organize high pressure, then our raisins can't dance as well as it should be!