No. Any change of state (solid to liquid, liquid to gas, etc.) is a physical change.
Melting steel is a physical change because only its physical state is altered, going from a solid to a liquid, without changing its chemical composition.
When the steel wool burns, it is oxidized and thus this is a chemical change.
Rusting of steel wool is a chemical change because it involves a reaction between iron in the steel wool and oxygen in the air to form iron oxide (rust). This new substance has different properties than the original steel wool.
Sure. A steel frame that begins to rust will be undergoing a chemical change.
No, shaping of steel is a physical change, not a chemical change. The steel's chemical composition remains the same before and after shaping, only its physical properties, such as shape and size, are altered.
no, its physical change :)
Magnetizing a piece of steel, a needle for example, is a physical change, for it causes the spin of a group of electrons to be co-alignedrather then randomly oriented. The chemical composition of the steel is unchanged.
Rusting is a chemical change, as steel/iron turns into iron oxide.
no rusting iron is not a physical change it is a chemical change
The simple act of melting the steel is a physical change. No one melts steel out of boredom. If the melt is so you can add other elements to it, then you've made a chemical change. If you're forming useful products from the steel without changing its chemistry, it's a physical change.
physical, just the aligning of magnetic domains what were previously random in orientation.
physical, just the aligning of magnetic domains what were previously random in orientation.