That process is called a chemical reaction.
When different elements join to form a substance, it is called a chemical reaction or a chemical bonding process. During this process, atoms of different elements combine and rearrange to create a new substance with different properties. This can occur through various types of bonding such as ionic bonding, covalent bonding, or metallic bonding.
Sodium chloride is it an entirely different substance with its own unique properties.
A substance's characteristic properties are the most recognizable properties of that substance. Chemical properties are exhibited as one substance is chemically transformed into another (e.g., iron rusting).
SUBSTANCE
Characteristic properties are unique for every different substance.
A mixture has different properties throughout; a pure substance has the same properties throughout.
These are called Chemical Properties.
when a substance undergoes a chemical change the original form cannot be recognized and it could get total new properties.
Physical properties are characteristics of a pure substance that can be observed without changing it into another substance. Chemical properties are characteristics of a pure substance that describes its ability to change into different substance.
I take this to be what the properties of the new substance would be. That depends on what the two original substances were.
its different because physical it bruoght on by us and chemical is different particles from once was a different substance.
This affirmation is generally true.