it desolves
No, A formation of a gas does not mean a chemical reation
Well, one of a substance's properties is whether it's a liquid or a gas or a solid. This is a physical property. If you mean chemical property, then no, it doesn't change with a change of phase.
solvent is a substance that has the ability to dissolve other substances
Promoter is a chemical substance used to increase the efficiency of a catalyst used in a chemical reaction, although it may not be a catalyst for the reaction.
yes it is because it is not changing the substance. EDIT: yes it is what? Is it chemical or physical? You probably mean it is a physical change.
substance created by the body to carry out chemical digestion substance created by the body to carry out chemical digestion
formula used in chemistry and a substance used in or a chemical process
That part of the energy in a substance that can be released by a chemical reaction
Any chemical compound, natural or artificial is a chemical substance. In the colloquial discussion the term substance is used in a more large sense, applied frequently to many materials.
a substance that results from a chemical change
A pure substance is a substance that cannot be separated by means of physical separation but only by chemical. It is a change in time.
No, A formation of a gas does not mean a chemical reation
This question is extremely general (no offense) but if by you mean "see stuff" you mean producing a new substance, then yes, it is a chemical change.
Well, one of a substance's properties is whether it's a liquid or a gas or a solid. This is a physical property. If you mean chemical property, then no, it doesn't change with a change of phase.
A product is a substance created in a chemical reaction
no, that's would be a chemical change :) .
solvent is a substance that has the ability to dissolve other substances