âSpoons come in many different sizes and are not precise enough to measure a childâs medication,â said pediatrician Ian Paul, MD, FAAP, lead author of the policy statement. âFor infants and toddlers, a small error â especially if repeated for multiple doses â can quickly become toxic.â.
Copper and bronze do not contain any iron, and only iron can rust (because rust is defined as iron oxide, a compound of iron and oxygen); so the answer is that steel will rust the fastest and copper and bronze will never 'rust'. But, yes, copper and bronze do tarnish, they do corrode.
Stainless steel does not rust easily. It is an alloy of iron containing small amounts of chromium and nickel. The chromium and nickel atoms distort the regular arrangement of the original packing of iron atoms. This hinders the free movement of electrons that is necessary for rusting.