02 Scf Cbse x Bmt 2 Periodic Classification of Elements Qp
The Chemistry of Life Elements and Water. Matter and Atoms Matter is any material that has mass and occupies space. All materials nonliving and living.
Representing Elements and Atoms. Atomic Number The number of protons in an atom = atomic number The atomic number identifies an atom as a specific.
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The Chemistry of Life Elements and Water
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