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physical
If form changes but identity doesn't change then it is a physical change.
it would be physical change because physical change is when the substance stays the same
Physical. If water evaporates, it is still water. It does not change into a different substance. A Chemical change is when something changes into a different substance. For example, when wood is burned, it changes into a different substance(ash).
Being ductile, malleable, freezing, melting are some examples of physical changes of a substance. Physical changes do not form a new substance while chemical changes do. Examples of chemical changes are a rusting nail and combustion.
Chemical reaction
A phase change.
Physical changes in a substance result in
physical
a physical is a change to a substance
Physical changes do not change the properties of the substance. You can get back the original state of the substance in most cases by reversing the physical process.
each substance has a density that differ from the densities of other substance.
A new substance is formed only after a chemical change.
Physical change
Many physical changes will not alter the identity. However, some physical changes, such as heating or cooling will result in phase changes and so the identity will be different. While ice and water are chemically the same, they are not identical forms of the substance.
If form changes but identity doesn't change then it is a physical change.
Depending on the experiment, there will be a series of physical and chemical changes.