@Atomdude to [email protected] • 2 years agoHow come rust built up on iron things looks like a thick crust, but somehow when it's removed it's like there's nothing gone from the original?message-square7arrow-up125arrow-down11
arrow-up124arrow-down1message-squareHow come rust built up on iron things looks like a thick crust, but somehow when it's removed it's like there's nothing gone from the original?@Atomdude to [email protected] • 2 years agomessage-square7
minus-square@Candelestinelink22•2 years agoBecause the rust is very fluffy, while the iron is very dense. So a very small volume of iron can turn into a large volume of rust. The iron is disappearing though. Just slowly. You could tell if you weighed it with a sensitive scale.
minus-square@efilerlink4•2 years agoJust want to add, that rust is not pure iron oxide(? can’t do chemistry in english) but also contains water molecules
minus-square@[email protected]linkfedilink2•2 years agoTo add to this, rust is only about 70% iron by mass, with the remainder being oxygen. So the rust basically weighs a bit more than just the iron used to create it.
Because the rust is very fluffy, while the iron is very dense. So a very small volume of iron can turn into a large volume of rust.
The iron is disappearing though. Just slowly. You could tell if you weighed it with a sensitive scale.
Just want to add, that rust is not pure iron oxide(? can’t do chemistry in english) but also contains water molecules
Really? I suppose rust is stranger than I even thought.
To add to this, rust is only about 70% iron by mass, with the remainder being oxygen. So the rust basically weighs a bit more than just the iron used to create it.