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1.506 × 10²³ molecules in  120.0 g of oxygen gas.

What are molecules?

The slightest particle of importance contains all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.

  • If they include more than one atom, the particles can be the same (an oxygen molecule has two oxygen atoms) or additional (a wetness molecule contains two hydrogen particles and one oxygen atom). Natural molecules, such as proteins and DNA, can be created up of many thousands of atoms.
  • Particles are the introductory unit of an element. They consist of a nucleus and cover electrons. When an atom has an insufficient electron shell, it is said to have valence electrons. When two or more additional atoms come concurrently to share outer surface valence electrons, a chemical (covalent) bond is formed, and they join a lower power state.
  • When atoms bond, significance is released in an exothermic response. If the covalent bond is broken and the molecule is split separated, it needs energy information and is thereby endothermic.

To learn more about molecules, refer to:

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