it is a physical change because no other chemicals are added. the only thing that makes a snowflake is water and cold. i believe the reason it takes the shape is because of the make up of the water molicule.H2O. one hydrogen and 2 oxygen
chemical
physical
Melting snowflakes is a physical change, not a chemical change. The water molecules in the snowflake remain the same chemical composition before and after melting, they just change from a solid to a liquid state.
chemical
No it is not. The chemical composition is H2O before and after freezing.
An 'iceberg' is no kind of change, but the melting and forming is a physical change.
Forming a bar of gold into wire is considered a physical change. This is because the gold's chemical composition remains the same during the process, only its physical shape is altered.
Melting iron is a physical change because it does not alter the chemical composition of the iron. It is a change in state from solid to liquid without forming a new substance.
No, it is a physical change, like boiling, melting and freezing
I think it is a chemical change Forming underground it is a chemical change Salt forming from a saline solution for example h20 + NaCl --delta-> h2 + O2 + NaCl (This is not a balanced solution) This is a physical change, since there is no change to the Sodium Chloride
The process of juice freezing and forming popsicles is a physical change. This is because the change in state from liquid to solid is a physical change that can be easily reversed by allowing the popsicle to thaw back into liquid form.
Still a physical change because its still gold and weren't doing anything like making a new element or mixing chemicals with the gold. So its still a physical change.