They are just two different terms that mean the same thing.
A chemical change is the same as a chemical reaction.
no- melting is not a chemical change. It is merely a change in state of the same substance not a chemical reaction.
A catalyst doesn't undergo a chemical change during a chemical reaction.
This is true.
the same as before the reaction
Yes. The two terms mean the same thing. They are synonyms.
They are just two different terms that mean the same thing.
no because a chemical change is any process in which 1 or more substance is changed into 1 or more substances whereas a chemical reaction is a process that leads to a transformation of one set of chemical substances to another
Because no chemical reaction is taking place. It is the same substance, just in a different state of matter.
No, freezing involves phase change, which is a physical change. There is no chemical reaction, as the basic chemistry is unchanged it is still the same material in a different physical state.
Chemical reaction
A gas released during a chemical reaction is a chemical change.