AQA Chemistry 2.1 Structure and bonding 0.0 / 5 ? ChemistryStructure and bondingGCSEAQA Created by: Shaye :)Created on: 14-05-14 16:42 What is a compound? Substances in which two or more elements are chemically combined 1 of 8 What are positively charged ions? Atoms that have lost electrons (and vice versa for negative ions) 2 of 8 Which group is chemically unreactive? Group 0 (noble gases) 3 of 8 What is an ionic compound? A giant structure of ions held together by strong electrostatic forces between oppositely charged ions 4 of 8 What are covalent bonds? Strong bonds formed when atoms share electrons 5 of 8 What is the structure of metals? Giant structures of atoms arranged in regular layers 6 of 8 What are two examples of giant covalent structures? Diamond and silicon dioxide 7 of 8 What and where are the delocalised electrons? They are electrons that are in the outer shell that are free to move throughout the entire structure 8 of 8
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