[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-207939-en":3,"doc-seo-207939-105":30,"detail-sidebar-cat-0-en-105":93},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":4,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},207939,687197207639,"Asher","https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd",4,"Exam","AQA GCSE Chemistry - Topic 8 - Identification of common gases - Notes","Chemical analysis notes for AQA GCSE Chemistry, Topic 8, focusing on identifying common gases using simple laboratory tests. The guidance covers hydrogen flame tests with a burning splint producing a squeaky pop, oxygen tests using a glowing splint that relights, carbon dioxide detection by bubbling through limewater to form a milky/cloudy solution, and chlorine identification using damp litmus paper bleached to white.","AQA GCSE Chemistry  \nTopic 8: Chemical analysis  \nIdentification of common gases  \nNotes  \n(Content in bold is for Higher Tier only)  \nTest for hydrogen  \n● Use a burning splint held at the open end of a test tube of the gas  \no Creates a ‘squeaky pop’ sound (hydrogen burns rapidly)  \nTest for oxygen  \n● Uses a glowing splint inserted into a test tube of the gas  \no Splint relights in oxygen  \nTest for carbon dioxide  \n● Bubble the gas through the limewater (calcium hydroxide (aq))  \no it will turn milky (cloudy)  \nTest for chlorine  \n● Use damp litmus paper  \no When damp litmus paper is put into chlorine gas the litmus paper is bleached and turns white","cbCaiueCQSetHVoP","https://ap.wps.com/l/cbCaiueCQSetHVoP","pdf",134052,1,2,"English","en",105,"# Topic 8: Chemical analysis\n## Identification of common gases\n## Test for hydrogen\n## Test for oxygen\n## Test for carbon dioxide\n## Test for chlorine","[{\"question\":\"How do you test for hydrogen gas?\",\"answer\":\"Hold a burning splint at the open end of a test tube containing the gas. Hydrogen produces a squeaky pop because it burns rapidly.\"},{\"question\":\"What observation indicates oxygen in this set of tests?\",\"answer\":\"Insert a glowing splint into the test tube of the gas. The splint relights in oxygen.\"},{\"question\":\"How is carbon dioxide identified?\",\"answer\":\"Bubble the gas through limewater (calcium hydroxide (aq)). It turns milky/cloudy.\"},{\"question\":\"How do you test for chlorine gas using litmus paper?\",\"answer\":\"Use damp litmus paper and put it into chlorine gas. The litmus paper is bleached and turns white.\"}]","AQA GCSE Chemistry - Topic 8 - Identification of common gases - Notes | PDF",1788601841,5,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":88,"head_meta":90,"extra_data":92,"updated_unix":28},"aqa-gcse-chemistry-topic-8-identification-of-common-gases-notes","",{"@graph":36,"@context":87},[37,52,66],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,47,50],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":21},"https://docshare.wps.com/document/","Document",{"item":48,"name":12,"@type":43,"position":49},"https://docshare.wps.com/document/exam/",3,{"item":51,"name":13,"@type":43,"position":11},"https://docshare.wps.com/document/aqa-gcse-chemistry-topic-8-identification-of-common-gases-notes/207939/",{"url":51,"name":13,"@type":53,"author":54,"headline":13,"publisher":56,"fileFormat":59,"inLanguage":23,"description":14,"dateModified":60,"datePublished":60,"encodingFormat":59,"isAccessibleForFree":61,"interactionStatistic":62},"DigitalDocument",{"name":9,"@type":55},"Person",{"url":41,"name":57,"@type":58},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":63,"interactionType":64,"userInteractionCount":4},"InteractionCounter",{"@type":65},"ViewAction",{"@type":67,"mainEntity":68},"FAQPage",[69,75,79,83],{"name":70,"@type":71,"acceptedAnswer":72},"How do you test for hydrogen gas?","Question",{"text":73,"@type":74},"Hold a burning splint at the open end of a test tube containing the gas. 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