[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-154158-en":3,"doc-seo-154158-105":31,"detail-sidebar-cat-0-en-105":95},{"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":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":22,"language":23,"language_code":24,"site_id":25,"html_lang":24,"table_of_contents":26,"faqs":27,"seo_title":28,"seo_description":14,"update_tm":29,"read_time":30},154158,687207024643,"Rhys","https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2",4,"Exam","Yr 9 Chemistry Notes Cheat Sheet","A concise Year 9 chemistry revision cheat sheet covering core matter concepts, atomic structure, and the periodic table. It summarizes the differences between elements, compounds, and mixtures, along with key atomic information such as protons, neutrons, electrons, and electron shell capacities. It also reviews conservation of mass, electron properties, and common reaction types including acid-metal, acid-carbonate, and acid-base reactions, with general equations, naming salts, and practical identification tests like pop tests, limewater, and universal indicators.","Yr 9 Chemistry Notes Cheat Sheet  \n[by](by castoff_science via cheatography.com/163345/cs/34220/)[ castoff_science](by castoff_science via cheatography.com/163345/cs/34220/)[ via](by castoff_science via cheatography.com/163345/cs/34220/)[ cheatography.com/163345/cs/34220/](by castoff_science via cheatography.com/163345/cs/34220/)  \nMatter  \n\n| Everything is made up of matter. |  |  |\n| --- | --- | --- |\n| Matter is made up of atoms. |  |  |\n| Classification of matter |  |  |\n| |  |  |\n| Periodic Table |  |  |\n| Table of all known elements arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons. |  |  |\n| Columns: Refer to groups of the table | Rows: Refer to as periods or the families of the table |  |\n| Structure of the Periodic Table |  |  |\n| |  |  |\n| Elements, Compounds, and Mixtures |  |  |\n| Element: A pure substance made from one type of atom.\u003Cbr>E.g. Sodium Formula: Na |  |  |\n| Compounds: Made from more |  | E.g. |\n| than one type of atom bonded |  | Sodium |\n| together. |  | Hydroxide\u003Cbr>Formula: NaOH |\n\nBy castoff_science  \n[cheatography.com/castoff](cheatography.com/castoff)science/  \nElements, Compounds, and Mixtures (cont)  \n\n| Mixtures: Made of substances | E.g. Salt |\n| --- | --- |\n| which are not chemically | Water |\n| bonded and can be separated. | Formula: NaCl |\n| Information on the Periodic Table |  |\n| Atomic Number |  |\n| Atomic Mass\u003Cbr>\u003Cbr>Number of Protons |  |\n| Number of Neutrons |  |\n| Number of Electrons |  |\n| Atoms: |  |\n| \u003Cbr>Atoms consist of three subatomic particles protons , Neutrons , and Electrons. |  |\n| Atomic Structure |  |\n| |  |\n| Electron Configurations |  |\n| The shells are numbered beginning with the shell closest to the nucleus and increasing in number farther away from the nucleus. |  |\n| Electron Shell Diagrams |  |\n| |  |\n| Electron shells are numbered from the shell closest to the nucleus outwards. |  |\n|  |  |\n\nNot published yet.  \nLast updated 19th September, 2022. Page 1 of 2.  \nElectrons  \n\n| Electrons: | Properties: |\n| --- | --- |\n| Particles orbiting the | Negatively |\n| nucleus | charged |\n| of the atom | No mass |\n| Electrons orbit the nucleus in electron shells .\u003Cbr>\u003Cbr>Maximum Number of electrons: |  |\n| The first electron shell holds | 2 atoms |\n| The second electron shell holds | 8 atoms |\n| The third electron shell holds | 8 atoms |\n|  |  |\n| The Law of Conservation of Mass |  |\n| The mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another |  |\n|  |  |\n| Counting Atoms |  |\n| \u003Cbr>[https://mrskmclean.files.wordpress.com/‐](https://mrskmclean.files.wordpress.com/‐)[ ](https://mrskmclean.files.wordpress.com/‐)[2013/09/counting-atom-notes.pdf](2013/09/counting-atom-notes.pdf) |  |\n| Acid-Metal Reactions |  |\n| \u003Cbr>Metals react with acids to form a salt and\u003Cbr>hydrogen.\u003Cbr>\u003Cbr>Identification: Pop Test\u003Cbr>The presence of hydrogen gas can be determined by placing a lit splint near the test tube.\u003Cbr>Hydrogen reacts causing a squeaky pop\u003Cbr>sound. |  |\n|  |  |\n\nSponsored by ApolloPad.com Everyone has a novel in them. Finish Yours!  \n[https://apollopad.com](https://apollopad.com)  \nYr 9 Chemistry Notes Cheat Sheet  \n[by](by castoff_science via cheatography.com/163345/cs/34220/)[ castoff_science](by castoff_science via cheatography.com/163345/cs/34220/)[ via](by castoff_science via cheatography.com/163345/cs/34220/)[ cheatography.com/163345/cs/34220/](by castoff_science via cheatography.com/163345/cs/34220/)  \nAcid + Metal General Formula  \n\n| |  |  |  |  |\n| --- | --- | --- | --- | --- |\n| Exothermic and Endothermic Reactions |  |  |  |  |\n| All chemical reactions either use energy or release energy. |  |  |  |  |\n| Reactions that |  | Reactions that |  |  |\n| require energy are |  | release energy are |  |  |\n| endothermic . |  | exothermic . |  |  |\n| Properties of Acids & Bases |  |  |  |  |\n| Acids |  | Bases |  |  |\n| pH between 0-7 |  | pH between 7-14 |  |","cbCailVvRBS6s5AQ","https://ap.wps.com/l/cbCailVvRBS6s5AQ","pdf",855068,3,1,2,"English","en",105,"# Matter\n## Classification of matter\n## Periodic Table\n## Elements, Compounds, and Mixtures\n# Atomic Structure\n## Electron configurations and shells\n## Electrons properties\n## Law of Conservation of Mass\n# Reactions\n## Counting Atoms\n## Acid-Metal Reactions\n## Exothermic and Endothermic Reactions\n## Properties of Acids & Bases\n## pH Scale and Indicators\n## General Word Equations\n## Acid-Base and Acid-Carbonate Reactions\n## Naming Salts","[{\"question\":\"What is the difference between elements, compounds, and mixtures?\",\"answer\":\"Elements are pure substances made from one type of atom. Compounds contain more than one type of atom bonded together. Mixtures are made of substances that are not chemically bonded and can be separated.\"},{\"question\":\"How do you determine the maximum number of electrons in the electron shells?\",\"answer\":\"Electron shells are numbered starting from the shell closest to the nucleus outward. The cheat sheet lists typical shell capacities: the first shell holds 2 electrons, while the second and third shells hold 8 electrons each.\"},{\"question\":\"How are acid-metal and acid-carbonate reactions identified?\",\"answer\":\"Acid-metal reactions are identified using the pop test to detect hydrogen gas. Acid-carbonate reactions are identified using the limewater test, where CO2 turns limewater milky white.\"}]","Yr 9 Chemistry Notes Cheat Sheet | PDF",1787889067,5,{"code":4,"msg":32,"data":33},"ok",{"site_id":25,"language":24,"slug":34,"title":13,"keywords":35,"description":14,"schema_data":36,"social_meta":90,"head_meta":92,"extra_data":94,"updated_unix":29},"yr-9-chemistry-notes-cheat-sheet","",{"@graph":37,"@context":89},[38,52,72],{"@type":39,"itemListElement":40},"BreadcrumbList",[41,45,48,50],{"item":42,"name":43,"@type":44,"position":21},"https://docshare.wps.com","Home","ListItem",{"item":46,"name":47,"@type":44,"position":22},"https://docshare.wps.com/document/","Document",{"item":49,"name":12,"@type":44,"position":20},"https://docshare.wps.com/document/exam/",{"item":51,"name":13,"@type":44,"position":11},"https://docshare.wps.com/document/yr-9-chemistry-notes-cheat-sheet/154158/",{"url":51,"name":13,"@type":53,"image":54,"author":59,"headline":13,"publisher":61,"fileFormat":64,"inLanguage":24,"description":14,"dateModified":65,"datePublished":66,"encodingFormat":64,"isAccessibleForFree":67,"interactionStatistic":68},"DigitalDocument",{"url":55,"@type":56,"width":57,"height":58},"https://docshare.wps.com/thumbnails/yr-9-chemistry-notes-cheat-sheet/154158.png","ImageObject",300,407,{"name":9,"@type":60},"Person",{"url":42,"name":62,"@type":63},"DocShare","Organization","application/pdf","2026-09-12","2026-08-28",true,{"@type":69,"interactionType":70,"userInteractionCount":20},"InteractionCounter",{"@type":71},"ViewAction",{"@type":73,"mainEntity":74},"FAQPage",[75,81,85],{"name":76,"@type":77,"acceptedAnswer":78},"What is the difference between elements, compounds, and mixtures?","Question",{"text":79,"@type":80},"Elements are pure substances made from one type of atom. Compounds contain more than one type of atom bonded together. Mixtures are made of substances that are not chemically bonded and can be separated.","Answer",{"name":82,"@type":77,"acceptedAnswer":83},"How do you determine the maximum number of electrons in the electron shells?",{"text":84,"@type":80},"Electron shells are numbered starting from the shell closest to the nucleus outward. The cheat sheet lists typical shell capacities: the first shell holds 2 electrons, while the second and third shells hold 8 electrons each.",{"name":86,"@type":77,"acceptedAnswer":87},"How are acid-metal and acid-carbonate reactions identified?",{"text":88,"@type":80},"Acid-metal reactions are identified using the pop test to detect hydrogen gas. Acid-carbonate reactions are identified using the limewater test, where CO2 turns limewater milky white.","https://schema.org",{"og:url":51,"og:type":91,"og:title":13,"og:site_name":62,"og:description":14},"article",{"robots":93,"canonical":51},"index,follow",{"doc_id":7,"site_id":25},{"code":4,"msg":5,"data":96},[97,101,105,108,112,117,122,127,132,135,139],{"id":21,"doc_module":4,"doc_module_name":47,"category_name":98,"show_sort_weight":99,"slug":100},"Story & Novel",90,"story-novel",{"id":22,"doc_module":4,"doc_module_name":47,"category_name":102,"show_sort_weight":103,"slug":104},"Literature",80,"literature",{"id":11,"doc_module":4,"doc_module_name":47,"category_name":12,"show_sort_weight":106,"slug":107},70,"exam",{"id":30,"doc_module":4,"doc_module_name":47,"category_name":109,"show_sort_weight":110,"slug":111},"Comic",60,"comic",{"id":113,"doc_module":4,"doc_module_name":47,"category_name":114,"show_sort_weight":115,"slug":116},6,"Technology",50,"technology",{"id":118,"doc_module":4,"doc_module_name":47,"category_name":119,"show_sort_weight":120,"slug":121},7,"Healthcare",40,"healthcare",{"id":123,"doc_module":4,"doc_module_name":47,"category_name":124,"show_sort_weight":125,"slug":126},8,"Research & Report",30,"research-report",{"id":128,"doc_module":4,"doc_module_name":47,"category_name":129,"show_sort_weight":130,"slug":131},9,"Religion & Spirituality",20,"religion-spirituality",{"id":130,"doc_module":4,"doc_module_name":47,"category_name":133,"show_sort_weight":130,"slug":134},"World Cup","world-cup",{"id":136,"doc_module":4,"doc_module_name":47,"category_name":137,"show_sort_weight":136,"slug":138},10,"Lifestyle","lifestyle",{"id":140,"doc_module":4,"doc_module_name":47,"category_name":141,"show_sort_weight":30,"slug":142},19,"General","general"]