All coins, even gold and silver, will tarnish, but rust is iron oxide, so only coins with iron in them will rust. The only ones I can think of are the steel 1943 US cents and some European Coins from the WW2 era.
it rusts coins faster because it has salt in which you put on fish and chips... :)
The plural of rust is rusts. As in "a nail left in the open rusts easily".
Iron is the transition metal that rusts when exposed to oxygen, forming iron oxide.
rusts and smuts
Coins are typically made from a combination of metals such as copper, nickel, and zinc, but not iron or steel. Iron and steel are not commonly used in coin production due to their susceptibility to corrosion and their weight compared to other metals.
iron
It easily becomes rusty.
no it a physical
it rusts
Metal rust will not harm trees. There are a number of fungus rusts that can harm plants but they are not metal rusts.
Wheat rusts "eat" wheat. It's a type of fungus that grows parasitically on wheat and related plants.
It rusts. Check the "related links" if you are concerned for more information regarding the chemical reactions that take place and the different products formed when iron rusts.