ATOMS AND MOLECULEVersion en ligne Practice work to learn definition of atom and classification of molecule. par Nancy Judah 1 The smallest unit of an element a Atom b Molecule 2 Group of atoms are called a Elements b Molecule 3 How many atoms of chlorine forms one molecule a 2 b 3 4 Atomicity of nitrogen molecule is a 3 b 2 5 Example of atomicity with 3 atoms a Hydrogen b Ozone c Oxygen
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