Physical changes vs chemical changes1/17/2024 But if you burn paper, what you get is carbon and not paper. On the other hand, no matter how many small pieces of a paper you cut, it still remains paper and there are no changes in its properties hence it is not a chemical change, but a physical change. Similarly, when you burn wood, you get ash and charcoal which have different properties from wood and you cannot reverse the process to get back wood. When the body of your car rusts, it is a chemical change (oxidation of iron to produce rust). The reaction is irreversible and you cannot get back the earlier material. Similarly, when you add salt or sugar to water to make solutions, it is a physical change as you can easily separate salt and sugar from the solutions to get original substances.įigure 01: Some Real Life Examples of Physical ChangesĮxamples of some physical changes include followings:Ī chemical change is a reaction in which matter converts into another type of matter. When you crush a can, you are merely causing a physical change in the shape and size of the can. Ice readily changes into the water while steam also converts into water upon cooling. Both are physical changes as they are merely changing the form of matter and the reactions are reversible. Your fridge converts water into ice and your humidifier converts water into steam. You must have observed changes in daily life too. Side by Side Comparison – Physical and Chemical Change in Tabular Form But it is important to understand the differences between these two types of changes as they affect our lives and environment also.Ĥ. There are many who would be tempted to say that a change is a change and why to bother to make a distinction between physical and chemical change. The key difference between physical and chemical change is that physical change merely changes the shape and size of the substance while chemical change produces altogether new substance.
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