Dehydration of hydrated salts is usually considered to be a physical change.
Heating is a physical process but thermal decomposition is a chemical process.
is it physical
chemical change
Physical.
sodium carbonate doesn't give any gas on heating. its sodium bi-carbonate which gives co2 on heating.
On heating penta hydrated copper sulphate undergoes dehydration and changes colour from blue to white that means physical change but on heating it does not show a chemical change.
It is a physical change because it has only changed state.
physical or chemical
physical or chemical
Heating is a physical process.
Heating is a physical process.
The heating itself is a physical change, a chemical change might come from the heating, however.
Heating is a physical process but thermal decomposition is a chemical process.
Heating is a physical process.
Heating is a physical change.
Chemical, the resultant molecules have different structures and properties.
It is a physical change. I goes from white, to yellow, back to white.