This is a chemical change.
Color can be anywhere from a physcal change to a chemical change.
The chemical reactions of sulfuric acid are chemical changes.
No, this is a chemical change.
Yes, the dissolution of sulfuric acid in water is a chemical change because it involves the breaking of ionic bonds in the sulfuric acid molecules as they interact with water molecules to form new chemical species through ionization.
Physical Change, the metal has the same chemical structure and only the shape of the bar has changed
It is a chemical change.2NaCl --> 2Na + Cl2
The substance is a compound, which forms chemical bonds that cannot be physically separated, but only by a chemical change.
I'm not exactally sure what you're asking (If I'm wrong, someone please correct me) but I think you're asking weather it's physcal or chemical, in which it's chemical.
This is a chemical process.
a mixture
With ionic compounds anyway, they dissociate into their ions. The chemical change is an equilibrium until separated.
A chemical change occurs because compound is two elements put together so when they are separated it forms a new substance.