Amazing Secrets Hidden In Everyday Things - Part 8

by Panzer
- [Narrator] We all love a good secret,
and luckily, it turns out the objects we use every day
are absolutely full of them.
From Coke's biggest secret to how batteries really work,
join me for yet another dive
into some of the most amazing secrets
hidden in everyday things.
(light suspenseful music)
- Whoa.
(bell dings)
- [Narrator] Cola can-do.
If you thought that Coca-Cola's best-kept secret
was its elusive recipe,
just wait till you see what else they're hiding
right under your nose.
(funky upbeat music)
Turns out there's far more to a Coke can than meets the eye,
a whole secret inner tube of plastic more.
In the clip you just saw,
the inner truth of an aluminum Coke can
was revealed by a remarkable chemical reaction.
When submerged in a highly corrosive alkaline solution
containing sodium hydroxide, like drain un-blocker,
a coke can goes through a chemical process
known as hydrolysis.
This reaction causes the aluminum in the can to dissolve,
revealing a surprising secret hidden within:
A plastic lining, which resists dissolving.
But what's it doing there?
Alongside carbonated water and lots of sugar,
soda contains acid.
Coke is one of the most acidic drinks in our refrigerators,
namely because of its contents of phosphoric
and citric acid.
These acids are corrosive in nature,
giving Coke a pH reading of around 2.5,
that's not much higher than battery acid.
While we all know sodas like Coke
can corrode our pearly whites, thanks, Mom,