Specification Test 2.5 / 5 based on 2 ratings ? ChemistryTesting and analysing substancesGCSEAQA Created by: Livvy PCreated on: 04-04-13 18:39 What are compounds? Substances in which atoms of two or more elements are chemically combined. 1 of 9 What does chemical bonding involve? Either transferring or sharing electrons in the highest occupied energy levels (shells) of atoms. 2 of 9 What is the aim of chemical bonding? To achieve the electronic structure of a noble gas. 3 of 9 What happens when atoms form chemical bonds by transferring electrons? They form ions. 4 of 9 What charge ions do atoms that lose electrons become? Positively charged. 5 of 9 What charge ions do atoms that gain electrons become? Negatively charged. 6 of 9 What is the electronic structure of an ion? The same as that of a noble gas (Group 0). 7 of 9 What is the name of the elements in Group 1 of the periodic table? The alkali metals. 8 of 9 What do alkali metals react with non-metals to form? Ionic compounds in which the metal ion has a single positive charge. 9 of 9
Comments
No comments have yet been made