[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-207393-105":59,"doc-detail-207393-en":125},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":118,"head_meta":120,"extra_data":122,"updated_unix":124},105,"en","identification-ions-chem-spectroscopic-means-gcse-aqa-chemistry-8462-practice-questions","Identification Ions Chem - Spectroscopic Means - GCSE AQA Chemistry 8462 Practice Questions","","Practice questions for GCSE AQA Chemistry (8462) focusing on identifying ions using chemical tests and flame emission spectroscopy. Tasks cover flame colours for specific metal ions, explaining limits of flame colour identification for mixtures, and interpreting flame emission spectra to determine two ions present. Additional questions use silver nitrate with dilute nitric acid to reveal an ion by precipitate formation, and require testing for sulfate ions and interpreting water treatment, nanoparticle effects, and atom/ion charge concepts.",{"@graph":69,"@context":117},[70,84,100],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/identification-ions-chem-spectroscopic-means-gcse-aqa-chemistry-8462-practice-questions/207393/",{"url":83,"name":65,"@type":85,"author":86,"headline":65,"publisher":89,"fileFormat":92,"inLanguage":63,"description":67,"dateModified":93,"datePublished":94,"encodingFormat":92,"isAccessibleForFree":95,"interactionStatistic":96},"DigitalDocument",{"name":87,"@type":88},"Xiajie","Person",{"url":74,"name":90,"@type":91},"DocShare","Organization","application/pdf","2026-09-07","2026-09-05",true,{"@type":97,"interactionType":98,"userInteractionCount":8},"InteractionCounter",{"@type":99},"ViewAction",{"@type":101,"mainEntity":102},"FAQPage",[103,109,113],{"name":104,"@type":105,"acceptedAnswer":106},"How can flame emission spectroscopy help identify metal ions in a firework mixture?","Question",{"text":107,"@type":108},"Flame emission spectroscopy produces spectra for individual ions and a combined spectrum for mixtures. By matching peaks in the mixture spectrum with those from the individual ion spectra, the two ions present can be determined.","Answer",{"name":110,"@type":105,"acceptedAnswer":111},"Why is it difficult to identify metal ions just from the colour of the flame?",{"text":112,"@type":108},"Mixtures contain multiple metal ions, so several emissions can overlap. The observed flame colour alone does not uniquely indicate which ions are present.",{"name":114,"@type":105,"acceptedAnswer":115},"Which test shows the presence of sulfate ions and what result is expected if sulfate ions are present?",{"text":116,"@type":108},"A chemical test for sulfate ions is required, and the expected outcome is the formation of a characteristic precipitate. The exact result is provided in the question’s testing instructions and marking scheme.","https://schema.org",{"og:url":83,"og:type":119,"og:title":65,"og:site_name":90,"og:description":67},"article",{"robots":121,"canonical":83},"index,follow",{"doc_id":123,"site_id":62},207393,1788599381,{"code":4,"msg":5,"data":126},{"doc_id":123,"user_id":127,"nickname":87,"user_avatar":128,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":129,"file_id":130,"file_url":131,"file_type":132,"file_size":133,"view_count":8,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":134,"language":135,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":136,"faqs":137,"seo_title":138,"seo_description":67,"update_tm":124,"read_time":139},8814010472675,"https://avatar.qwps.com/avatar/WGlhamll","Identification Ions Chem + Spectroscopic Means  \nThese practice questions can be used by students and teachers and is suitable for GCSE AQA Chemistry topic Questions 8462  \nLevel: GCSE AQA Chemistry 8462  \nSubject: Chemistry  \nExam board: GCSE AQA  \nTopic: Identification Ions Chem + Spectroscopic Means  \nQ1 .  \nThis question is about chemicals in fireworks.  \nColoured flames are produced because of the metal ions in the fireworks.  \n(a) What colour flame would sodium ions produce?  \n(1)  \n(b) Name a metal ion that would produce a green flame.  \n(1)  \n(c) Some fireworks contain a mixture of metal ions.  \nWhy is it difficult to identify the metal ions from the colour of the flame?  \n___________________________________________________________________  \n___________________________________________________________________  \n(1)  \n(d) Flame emission spectroscopy is used to identify metal ions in a firework.  \nThe diagram below shows:  \n• the flame emission spectra of five individual metal ions  \n• a flame emission spectrum for a mixture of two metal ions.  \nWhich two metal ions are in the mixture? Tick two boxes.  \nCa2+  \nCu2+  \nK+  \nLi+  \nNa+  \n(2)  \nThe compounds in fireworks also contain non-metal ions.  \nA scientist tests a solution of the chemicals used in a firework.  \n(e) Silver nitrate solution and dilute nitric acid are added to the solution. A cream precipitate forms  \nWhich ion is shown to be present by the cream precipitate?  \n(1)  \n(f) Describe a test to show the presence of sulfate ions in the solution.  \nGive the result of the test if there are sulfate ions in the solution.  \nTest  \n_______________________________________________________________  \n___________________________________________________________________  \n___________________________________________________________________  \nResult    \n(3)  \n(Total 9 marks)  \nQ2 .  \nThis question is about water.  \nRiver water needs to be treated before it is safe to drink.  \n(a) The diagram shows two stages of the treatment of river water.  \n(i) What is the name of the process used to remove solid particles in Stage 1?  \nTick () one box.  \nCrystallisation   \nFermentation   \nFiltration   \n(1)  \n(ii) What is added in Stage 2 to sterilise the water?  \nTick () one box.  \nChlorine   \nFluoride   \nPotassium   \n(1)  \n(b) Toxic substances in river water are removed by adding very small amounts of iron oxide nanoparticles.  \n(i) How is the size of nanoparticles different from normal-sized particles?  \n______________________________________________________________  \n______________________________________________________________ (1)  \n(ii) Nanoparticles are needed in only very small amounts.  \nSuggest why.  \n______________________________________________________________  \n______________________________________________________________  \n(1)  \n(c) In certain areas of the UK, tap water contains aluminium ions.  \nWhat would you see when sodium hydroxide solution is added drop by drop to tap water containing aluminium ions?  \n\n|  |\n| --- |\n|  |\n|  |\n\n(2)  \n(Total 6 marks)  \nQ3 .  \nThis question is about atoms.  \nAtoms contain electrons, neutrons and protons.  \n(a) (i) Which of these particles has a positive charge?  \nTick () one box.  \nElectron   \nNeutron   \nProton   \n(1)  \n(ii) Which of these particles does not have an electrical charge?  \nTick () one box.  \nElectron   \nNeutron  \nProton  \n(1)  \n(b) How are the elements in the periodic table arranged?  \nTick () one box.  \nIn order of increasing atomic number   \nIn order of increasing mass number   \nIn order of increasing reactivity   \n(1)  \n(c) The diagram shows the arrangement of the electrons in an atom of fluorine.  \n(i) How many protons are in an atom of fluorine?  \nTick () one box.  \n2   \n7   \n9   \n(1)  \n(ii) The boiling point of fluorine is −188 °C.  \nWhat is the state of fluorine at room temperature? Tick () one box.  \nSolid   \nLiquid   \nGas  \n(1)  \n(d) Fluorine reacts with copper to form an ionic compound.  \n(i) Explain, in terms of e","cbCaiujz7QWyGPpE","https://ap.wps.com/l/cbCaiujz7QWyGPpE","pdf",836791,78,"English","# Q1 Identification of metal ions in fireworks\n## (a)-(f) Flame colours, spectra, and precipitation tests\n# Q2 Water treatment and nanoparticle effects\n## (a)-(c) Filtration, sterilisation, and reactions with sodium hydroxide\n# Q3 Atoms and periodic table concepts\n## (a)-(d) Charges, ordering, electron arrangement, and tests for copper(II)\n# Q4 Chemical tests for ions\n## (a)-(c) Precipitate colours and flame test limitations\n# Q5 Chemical analysis using test tables","[{\"question\":\"How can flame emission spectroscopy help identify metal ions in a firework mixture?\",\"answer\":\"Flame emission spectroscopy produces spectra for individual ions and a combined spectrum for mixtures. By matching peaks in the mixture spectrum with those from the individual ion spectra, the two ions present can be determined.\"},{\"question\":\"Why is it difficult to identify metal ions just from the colour of the flame?\",\"answer\":\"Mixtures contain multiple metal ions, so several emissions can overlap. The observed flame colour alone does not uniquely indicate which ions are present.\"},{\"question\":\"Which test shows the presence of sulfate ions and what result is expected if sulfate ions are present?\",\"answer\":\"A chemical test for sulfate ions is required, and the expected outcome is the formation of a characteristic precipitate. The exact result is provided in the question’s testing instructions and marking scheme.\"}]","Identification Ions Chem - Spectroscopic Means - GCSE AQA Chemistry 8462 Practice Questions | PDF",197]