Is it physical or is it chemical change

1.water is boiling in preparation for making pasta
2.old ham goes bad in the refrigerator
3.a rock star gets a tattoo on his forehead

Water boiling is a physical change, because the chemical composition has not changed, just it's form (it's H2O liquid converting to H2O gas)

Ham going bad is a chemical change because the ham is decomposing. The composition of the ham has changed which is why it smells bad and would taste different if you ate it.

The tattoo is harder to say. My guess is physical but I can see arguments for either one.

1) physical
2) chemical
3) physical

1. physical
2. chemical
3. it depends. i say chemical

1. I do not know
2.chemical change because something new was created that wasent there.
3. Physical change because just the apperance of the person changed

Physical change.