Types of Substances
1)A temporary change in which the composition of the substance remains the same and no new substance is formed but only a change of state occurs.

2)A permanent change in which a new substance is formed that has properties, which are different from the original substance

3)Substance which contains two or more different kinds of particles is called

4)An is the smallest unit and shows all the properties of an element

5)Almost all metals are solids except which is a liquid at room temperature

6)A is the smallest particle of a compound with properties similar to that of a compound

7)A mixture in which various constituents are mixed uniformly. 

8)Mixture does not have a sharp melting or boiling point. 


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