Water vapour can be cooled to form liquid water. Liquid water can be heated to form water vapour, a gas. Liquid water can be frozen to form solid water, ice. Ice, solid water, can be heated to form liquid water. Some common examples of physical changes are given in the table below: You could remove the heat, that is cool, the liquid water to re-form the solid water (ice) so this change is easy to reverse.
Initially water was in the solid state, finally the water is in the liquid state, so there has been a change of state. You have not changed the water into a different substance, you start with water and end with water. Heating solid water (ice) so that it melts into liquid water is a physical change because it: involves a change in the physical state or appearance of the substance.does not involve the the formation of any new substances.
PHYSICAL VS CHEMICAL CHANGE NON REACTIVITY FREE
No ads = no money for us = no free stuff for you! Physical Changes ⚛ A physical change is usually easy to reverse. ⚛ A physical change involves a change in the physical state or appearance of the substance.
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