Chemistry

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Does rust spread? (mander.xyz)

submitted 6 days ago by [email protected] to c/[email protected]

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A chemist told me rust does not spread. The top of my refrigerator gives me some doubt. It’s covered in these spots. The center of every spot is a small break in the paint, but the rust all around those spots is on top of the paint.

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[–] [email protected] 5 points 6 days ago (1 children)

It doesn't spread. I'm guessing the "spread" effect was caused by being moved around by water.

[–] [email protected] 2 points 6 days ago* (last edited 6 days ago)

I struggle to believe water pooled up enough to carry stuff. Condensation is possible perhaps to the extent of having some invisible amount of sweat. Unless there were puddles that formed and evaporated before I saw it. Though it’s a short fridge. The top of it is at eye level so I see the top every day.

Here’s another pic: