Physical changes refer to changes of state: solid to liquid or liquid to gas (or vice versa). The chemical structure of the substance does not change, only the amount of energy it contains.
the subtance cannot be changed back to its form
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
It does change its physical look but it does not change chemically.
physical change
It changes the way it looks
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It enlarges
The chemical composition of a substance does not change when it undergoes a physical change.
Physical change.
It does change its physical look but it does not change chemically.
It does change its physical look but it does not change chemically.
maybe..
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
It does change its physical look but it does not change chemically.
maybe..
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
After a physical change a substance does not change its chemical composition it simply changes its state as, water to ice or vapours.
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped