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Decode chemical formulas for Grade 8. Q1: 'H₂O means...' A) 2 hydrogen atoms and 1 oxygen atom (correct!), B) 1 hydrogen and 2 oxygen, C) Water in code. Q2: 'CO₂ means...' → 1 carbon + 2 oxygen. Q3: 'What does the subscript number tell you?' → How many atoms of that element. Q4: 'NaCl has no subscri

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