Color is a physical property, not a change.
physical change
physical
Those are physical properties; they can be observed, recorded, and measured with the senses.
a chemical change
If a silver colored ring turns your finger green it is a physical change that is caused by a chemical reaction.
physical change
A physical property.
physical
Chemical change
Chemical change
It is a chemical change.
Chemical change
a chemical change
a physical property
Those are physical properties; they can be observed, recorded, and measured with the senses.
Chemical change
Chemical Change.--its tarnish!