yes
I think the answer you're looking for is a "Chemical Reaction". For instance, combining Hydrochloric Acid (HCl) and Sodium Hydroxide (NaOH) will cause a Chemical Reaction resulting in salt water (NaCl + H20).
Chemical changes occur after a chemical reaction.
When chemical changes it can cause a chemical reaction..it can fizz or explode or sometimes change temperatures..for example baking soda and vinegar fizz..
Heat?
Physical changes give no evidence that a chemical reaction has taken place, because no chemical reaction has taken place.
A chemical reaction is a chemical change.
This is a chemical reaction.
it changes chemical properties
Chemical reactions are of course chemical changes.
It changes them
It refers to the energy changes that take place during a chemical reaction.
An enzyme speeds up a chemical reaction.