Subatomic particleRelative chargeRelative mass Proton Neutron Electron Define: mass number:…………………………………… …………………………………………………………. Proton number:………………………………… …………………………………………………………. Isotope: ……………………………………………. …………………………………………………………. ……………………………………………………….... Which element is this: 1.14 protons ………………………………..…… 2.Mass number of 19 ……………..……….. 3.Group 2, period 4 …………… ……… 4.6 neutrons …………………………………… neutrons …………………………………... Why do ionic compounds have high melting points? …………………………………………………………………………..……… ……………………………………………………………………………….... When will an ionic compound conduct electricity? ………………………………………………………………………………….. ………………………………………………………………………………….. Magnesium chloride contains Mg 2+ and Cl - ions: what is the formula for magnesium chloride? …………… What is a covalent bond? ………………………………….. …………………………………………………………………………… …………………………………………………………………………… Draw a dot-and-cross diagram to show the bonding in chlorine, Cl 2 C4 Revision Write a word equation for the reaction of sodium in water: Write a balanced symbol equation for the reaction of potassium in water: What is oxidation? …………………………… ……………………………………………………….... Write an ionic equation for the oxidation of Na to Na + Describe how to carry out a flame test:..………… ………………………………………………………………………… ………………………………………………………………………… ………………………………………………………………………… Metal ionColour of flame Li + Na + K+K+ HalogenStateColour Chlorine Bromine Iodine Write a balanced symbol equation for the reaction of lithium and chlorine What is a displacement reaction? …………….………………… ……………………………………………………………………………… …………………………..…………………………………………………… Why is fluorine more reactive than bromine? ……………………………………………………………………………….. ……………………………………………………………………………..… Write a balanced symbol equation for the reaction of chlorine and potassium bromide 1.Name a use for transition metals 2.An unknown compound makes a blue hydroxide precipitate, what metal is this? 3.Why would copper be used for electrical wires? 4.Name one benefit and one drawback of superconductors 5.Why is water chlorinated? 6.Name two ions you test for in water and what solutions you use

Atomic structure & periodic table 1.Which element has the electronic structure ? 2.What is the relative mass of a neutron? 3.Name an element with only one electron in its outer shell 4.The atomic number of silicon is 14 – what does this mean? 5.Name an element with 6 electrons in its outer shell 6.Name an element with 8 electrons in its outer shell 7.Which period does sulphur belong? 8.Draw the electronic structure of a silicon atom 9.Describe how to carry out a flame test 10.What is the name of the gas that burns with a ‘squeaky pop’? Transition metals 1.Two solutions are mixed to make an insoluble solid, what is this solid called? 2.What is the colour of iron(II) hydroxide? 3.Name a transition metal that forms blue compounds 4.Copper carbonate decomposes to make copper oxide and carbon dioxide – write a word equation for this reaction 5.Fe 2+ reacts with OH - to make Fe(OH) 2 - write a balanced ionic equation for this reaction Bonding 1.Draw a dot-and-cross diagram to show the covalent bonding in water, H 2 O 2.Draw a labelled diagram to explain how metals bond Superconductors 1.What are the benefits and drawbacks of superconductors? 2.Superconductors conduct electricity with no loss of power – explain why 3.A superconductor can be used to make a large, powerful magnet, what is this called? Group 7 elements 1.potassium and fluorine react to make potassium fluoride - write a balanced symbol equation for this reaction …………………………………………………………………………………………………….. 2.Write a word equation for the reaction between sodium and chlorine …………………………………………………………………………………………………………………………………………..………………………. 3.Why is chlorine more reactive than bromine? …………………………………………………………………………………………………………………………………………………………………………………………………………. 4.Name a group 7 element that is a red-brown liquid ………………………………………………………………………………………………………………………………………………………………………………..………………. 5.Which element in group 7 is a dark grey solid? ………………………………………………………………………………………………………………………………………………………………………………………………….……. 6.What is reduction? ……………………………………………………………………………………………………. ………………………………………………………………………………………………………………………………………….. Water 1.A sample of water is tested with silver nitrate, a yellow precipitate is formed – what ion is present? 2.Why does water go through the chlorination process? 3.BaCl 2 reacts with Na 2 SO 4 to make BaSO 4 and NaCl – write a balanced symbol equation for this reaction 4.Sodium chloride reacts with silver nitrate to make sodium nitrate and silver chloride – write a word equation to show this reaction 5.How might pesticides get into a river? Group 1 elements 1.Finish the sentence: lithium atoms lose ………………………………………..…. to make positive lithium ions 2.Explain why potassium is more reactive than sodium 3.Write a word equation for the reaction between sodium and water 4.Sodium loses electrons to make positive ions, what is the name of this reaction?