(classical music)
- Hey I'm Josh Clark and
I'm wondering have you ever
cut yourself really badly and when you put
hydrogen peroxide on your
hand, you through your tears
of pain thought, wow that's
really cool that it's foaming?
I wonder why that's foaming?
Inside your cells, inside
your tissue and your blood
you have a cool little
enzyme called Catalase
and when Catalase comes in
contact with hydrogen peroxide
it breaks it down into its constituent
turning it into pure oxygen and water.
When you cut yourself
you got a lot of Catalase
in your open wound because
there's a lot of blood there
and there's a lot of ruptured cells.
So when you add that hydrogen peroxide
Catalase very efficiently breaks it down.
Something like one molecule of Catalase
can create 200,000 reactions
in hydrogen peroxide
per second.
That's a lot of foaming.
And when it creates that oxygen gas
that turns into bubbles
which is why it foams.
Then the other stuff is
just water running off.
So the next time you have a cut
and you pour that on your hand
you can say I know exactly what's going on
and ow, ow, that hurts.
You can also do this, you
don't need to cut yourself
just for this kind of
thing, by putting a piece
of cut potato in a cup, pouring
a little hydrogen peroxide
on it, watching it foam,
and getting very, very bored
and asking yourself what
you're doing with your life?
You could also do it with
liver if you want to do that.
Pretty much anything that
has a cell that has Catalase
in it will react with hydrogen peroxide.
Pretty neat huh?
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