Which process is an example of a chemical change?
A metal railing rusting in damp weather
alcohol evaporating from a cotton swab
steam rising from a boiling pot of soup
a piece of wood shrinking as it dries out
4 answers
A chemical change produces a new substance, while physical changes don't. In the case of the alcohol evaporating, it's still alcohol in the end, but it's now a gas. With the steam rising, it's it's still water. The wood loses some water but it's still wood, so the only possible answer would be the rusting on the railing because rust is a different type of material than the object that went under the transformation.
thank you
Thank you Ann
wood as it dries out