Atom and molecules

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some basics concepts of chemistry #11


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  • Molecule: a molecule is the ultimate particle of an elements or compound which can  exist in free state and possesses all characteristic  properties of that substance.
    molecules

  • Atom:  An atom is the ultimate particle of an element of an element which can take part in a chemical reaction. 
    Atom
        
Molecules are of  two  types

1. Elementary                      2. Compound 


1. Elementary molecules are  composed of atoms of same elements,  e.g., hydrogen(H2)  chlorine(Cl2)...  etcetera 
Oxygen (O2)

2. Compound molecules are composed of atoms of more than one type of element   e.g., HCL, CO2,  NH3  ... etcetera 
NH3  molecules 

Note:  The Atoms of noble gases and  metals can exist in free state.
Location: India Garden Reach, Kolkata, West Bengal, India
This is Shoaib Alam, Man behind your ElectronGate

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