No they cannot. Chemical changes never ever go back.
generally no, but sometimes yes. if one or more of the products is insoluble or otherwise removes itself from the other products, then the reaction is considered irreversible.
Atoms are rearranged, heat may be given off, changes in color and odor might occur, or a gas or precipice may be formed. The composition is changed, and the above are signs of a chemical change.
Yes, physical is only appearance, and chemical is changing it properties. If I cut wood, it's still wood. It has not changed.
These are called catalysts.
The composition of a chemical compound is not changed during a physical change.
chemical reaction is when a substance is changed chemicaly but not physicaly
I chemical property is a characteristic of a substance that is determined when the changed and one or more new substances are produced
generally no, but sometimes yes. if one or more of the products is insoluble or otherwise removes itself from the other products, then the reaction is considered irreversible.
It all depends on what chemicals you are using. For example, if you were using sulfur & carbon, either one could be changed.
Yes. Chemical changes are irreversible, but physical changes can easily be changed back
A substance that undergoes change in a chemical reaction is called a reactant.
Yes, and here is the reason: The Definition of a chemical property is a property in which a substance has a potential to change Identity under certain circumstances in that manner of chemical change. If this substance changes identity, then new substances are produced from the matter that was changed.
The reactants are changed in products having new chemical composition.
In a physical change, the chemical composition of the substance remains the same, but some physical properties like shape, size, or state may change. This means that the substance can be reversed back to its original state without undergoing a chemical reaction.
I think you are talking about a chemical change,
This affirmation is generally true.
Any instance in which the chemical formula of a given substance is changed, resulting in the formation of a new substance.