Chemistry 2.0 / 5 based on 1 rating ? ChemistryIGCSEEdexcel Created by: SarahCreated on: 13-03-13 17:03 Describe ionic bonding The atom gains or loses electrons 1 of 8 What form of bonding takes place between water molecules? Covalent bonding 2 of 8 What is a catalyst It speeds up a reaction but reamins unchanged. 3 of 8 What is the relative atomic mass? The average of all the masses 4 of 8 How do you find the percentage of an element in a molecule? The elements mass/ overall mass x 100 5 of 8 What is the empirical formula? The lowest ratio of atoms in a compound 6 of 8 what is a mole? 1 mole= mass of the element 7 of 8 How do you work out the number of moles? Moles= mass/ atomic mass 8 of 8
Comments
No comments have yet been made