Basic definitions - 1.3 0.0 / 5 ? ChemistryFormula. equations and amount of substanceASEdexcel Created by: Julius CeaserCreated on: 30-08-16 14:07 2647351 Across 1. smallest unit of an element (4) 4. atoms of different types covalently bonded together (8) 5. an electrostatically charged atom (3) Down 2. the simplest ratio between atoms in a substance (9, 7) 3. the actual number of atoms in a substance (9, 7) 6. substance composed of only one type of atom (7) 7. atoms of different types chemically bonded together (8)
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