chemistry c2.1 0.0 / 5 ? ChemistryStructure and bondingGCSEAQA Created by: hollybarber1999Created on: 23-11-15 11:53 what happens when two or more elements react together? compounds are formed 1 of 31 how do atoms and elements join together? by sharing or transferring electrons 2 of 31 by sharing or transfering electrons what happens to the electronic structures it stables the electronic structures 3 of 31 when atoms of non-matalic elements join together what is is called? covalent bonding 4 of 31 when metalic elements react with non-metalic elements the produce... ionic compounds 5 of 31 what happens when the atoms lose electrons they form positive ions 6 of 31 the atoms of non-metal gain electrons to form.. negative ions 7 of 31 the ions have the stable electronic structure the same as a... structure of a noble gas 8 of 31 the oppositely charged ions attract eachother in the ionic compound what is this called ionic bonding 9 of 31 ionic bonding holds... oppositely charged ions together in giant structures 10 of 31 strong electrostatic forces of attraction act in... all directions 11 of 31 each ion in the gian structure is surrounded by... ions with a opposite charge so it is held firmly in place 12 of 31 what can we use dot and cross diagramsto represent... the atoms and ion involved in forming ionic bonds 13 of 31 ionic compounds are... neutral 14 of 31 if you know the charge of each ion in a compound how can you work out its formula balancing the charges 15 of 31 the charge on simple ions can be worked out by... the number of the group 16 of 31 transition metals charge on the ion is worked out by the roman numeral on the name of the compound 17 of 31 some ions are made up of more than... one element 18 of 31 to write out the formula for the ions with more than one element you.. use brakcets e.g Ca(OH)2 19 of 31 how do atoms of nin metals achieve a stable structure? gain electrons 20 of 31 to gain electrons what has to happen? share electrons with other atoms 21 of 31 each shared pair of electrons strongly attracts two atoms what does this create a covalent bond 22 of 31 what are the substances that have aroms held together with covalent bonding called? molecules 23 of 31 how many electrons does group 7 need to gain to form a single covalent bond? one 24 of 31 what does a covalent bond only act between? two atoms 25 of 31 what makes a giant covalent structure? joining together of atoms 26 of 31 what can giant covalent structures be referred to as? macromolecules 27 of 31 How can we represent covalent compounds through showing electrons and lines 28 of 31 what size are the atoms in a metallic element? all the same size 29 of 31 what is metallic bonding? when metal atoms pack together the electrons in the highest energy level delocalise and can move freely between atoms 30 of 31 What do the delocalised electrons do ? attract the positive ions and hold together the giant structure 31 of 31
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