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Q. What are Changes in Matter?
Matter is able to undergo two fundamental kinds of changes. Changes that don't alter the composition of matter are called physical changes. State changes in that matter changes from one phase (or state) to another are common examples of physical changes. The temperatures at that the phase changes of boiling and melting take place are important physical properties of substances.
Preparation method of Amine
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Q. What are the physical properties of solids? Ans. Most solids eventually melt when heated. This is because the particles gain enough energy to exceed the attractive for
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