Explain the following with exples (a) pure substance (b) elements (c) compound
Answers
(a) Pure Substance is either element or compound. It contains the same kind of atom or molecules and has a definite set of physical and chemical properties.
Elements constitute the simplest chemical substances in which all the atoms are exactly the same
Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio.
Chemistry is the study of the structures, physical properties, and chemical properties of material substances. It is very important to understand that all gases, liquids and solids are not the same. All are different in terms of their composition. This is the reason why the classification of the matter is very important.
Answer:
a) Pure Substance: A pure substance is that form of matter which has constant properties and characteristics.
For example: Water is the best example of pure substance.
b) Element: A substance that cannot be breakdown into other substance is called element.
For example: iron, carbon, silver etc.
c) Compound: A substance that consists of two or more elements is called compound.
For example: Hydrogen and Oxygen make water.