define molecule. State two properties of a molecule.
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All molecules have a definite mass and size that are dependent on the atoms from which the molecule is made. The mass is equal to the sum of the masses of all the individual atoms in the molecular structure. This is also true when new molecules form. ...
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Explanation:
the smallest unit of a substance is called molecule.
two properties of molecule are:
(a)low melting point
(b) physical state at room temperature
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