Recognize that atoms of a given element are all alike but atoms of other elements have different atomic structures.
Analyze chemical and physical changes and interactions involving energy and forces that affect motion of objects.
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Chemical symbols and chemical formulas of common substances such as NaCl (table salt), H20 (water), C6H12O6 (sugar), O2 (oxygen gas), CO2 (carbon dioxide), and N2 (nitrogen gas)
Use informational text to sequence the major discoveries leading to the current atomic model.