Alright, and they have, yes, colored liquids
好，确实，这里有各色液体
How do you know they're liquids?
你们怎么知道是液体的
They could be jells. How can you find out?
它们也可以是胶状物，你们怎么知道不是
We shake them up a little bit
我们可以摇一摇
because we know from experience, it's a keyword
根据经验就知道了，经验是个关键字
we learn things, our brain learns things, so we use them, right?
我们学到东西，大脑学到知识，我们使用它们
So they're liquids
这些是液体
So I'm going to take chunks of dry ice
我将取一些干冰
and put them into cylinders in a very special way
放到柱形容器内
and when I get done
完成之后
you tell me what the specialty is
你们要告诉我发生了什么
What's blowing out?
什么不断冒出来
You see any bubbles?
看到泡泡了吗
What kind of bubbles are those?
这些是什么泡泡
Well, do you wanna know what's in there?
想知道这其中是什么吗
You already know what's in there, the dry ice, I put the dry ice in there
你们已经知道其中是什么了，干冰，我加入的是干冰
What did I put the dry ice into?
我把干冰加到什么中了
Into cylinders that have colored liquids in them, right?
放到装有各色液体的柱形容器中
And I put the dry ice in every other cylinder
而且干冰被放入到每隔一个的柱形容器
I didn't put it in every cylinder, right?
而不是放到每个柱形容器中
Every other cylinder
每隔一个柱形容器
leaving one for comparison purposes, so
留一个作为对比
these are dyes that change color when the pH of the liquid changes
这些是染料，其颜色会随液体pH值变化而变化
Alright, so let's break down what's happening in these cylinders
我们来分析一下柱形容器中发生的情况
There are 6 of them
总共有六个容器
and each set is a different color
每一组的颜色都不同
because they're different acid-base indicators inside them
因为每一组都是不同的酸碱指示剂
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