AQA A Level Chemistry - Atomic Structure 0.0 / 5HideShow resource informationChemistryAtomic StructureThe Periodic TableA2/A-levelAQACreated by: luciastarrulzCreated on: 16-04-16 19:18 3578216410 Across 1. Said some atoms are positive and some are negative. Calculated atomic weights (4, 5, 9) 4. Holds 2 electrons in 1 orbital (1, 8) 5. The number of protons in the nucleus, which attracts the electrons to it (7, 6) 6. Holds 14 electrons in 7 orbitals (1, 8) 8. An electron from 4s is promoted to 3d giving the formation [Ar] 4s1 3d10 which is more stable (6) 10. The ions move freely through an area. Light, high charge ions are quickest (3, 5) Down 1. Suggested that all matter was made from indestructible atoms (4, 6) 2. Discovered that electrons are arranged in shells that orbit the nucleus and they determine reactivity. Protons form the nucleus (5, 4) 3. The mass of an ion divided by its charge (4, 6, 5) 7. Created the "plum pudding" model where electrons are in a sphere of positive charge (1, 1, 8)
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