C1 Revision 4.0 / 5 based on 4 ratings ? ChemistryGCSECIE Created by: Josh HurwoodCreated on: 30-05-13 12:21 10359241786 Across 1. Other ores are ................... to the metal oxide before or during smelting (9) 6. The number of outer electrons in the atom determines how an element ...................... (6) 7. Electrolysis is used to purify ..................... (6) 8. Each aluminium ion needs ................ electrons to become an atom (5) Down 2. Only minerals with enough metal are used as (4) 3. Limewater is used to test for ......................... (6, 7) 4. Neutrons have no charge and are ....... (7) 5. Metals above carbon in the reactivity series are extracted using .................. (12) 9. Elements with the same number of outer electrons have similar chemical ........................ (10) 10. Elements are ........... that cannot be broken down by chemical reactions into simpler substances (10)
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