Chemistry Video lectures are provided by Sir. Mr. Shakil Ahmed Bullo Sahab (He is BSc Hons in Chemistry)
Smallest particles of matter which take part in a chemical reaction is called atom.
Two parts
- Nucleus
- Orbital
Extra nuclear parts
- Orbitals
- Shells
- Energy levels
Fundamental particles
- Electron
- Proton
- Neutron
Ions
Positively or Negatively charged atoms are known as ions
Molecule
When two or more atoms chemically combine with each other Molecule are formed
Examples
- H2
- Homo atomic Molecules
- H2O
- Hetro atomic Molecules
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