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.

You're listening. You're listening.

You're listening.

You're listening.

You're listening.

You're amazed.

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.

Once submerged in a highly corrosive alkaline solution containing sodium hydroxide, like drain unblocker,

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 about 2.5. That's not much higher than battery

acid. While we all know sodas like Coke can corrode our pearly whites, thanks mom.

Did you also know that soda's acidity is strong enough to eat away at metal too?

And seeing as Coke is sold in aluminum cans, that's where our little tube of plastic comes into play.

Made from polymer or epoxy, this resin layer is installed in the manufacturing process

as a protective barrier between the acidic soda and the aluminum waltz of the can.

Not only does this prevent the liquid from corroding the metal, and doing so it also protects the soda's flavor from being tainted by the dissolved metal.

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