[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-207921-en":3,"doc-seo-207921-105":30,"detail-sidebar-cat-0-en-105":90},{"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},207921,8796095360427,"Lucas Martin","https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d",4,"Exam","AQA GCSE Chemistry - 7.1 Hydrocarbons: Fuel & Feedstock - Organic chemistry fundamentals","Revision notes for AQA GCSE Chemistry section 7.1 Hydrocarbons: Fuel & Feedstock, focusing on organic chemistry and hydrocarbons. Covers the definition of organic chemistry, carbon bonding and functional groups, classification by dominant functional group, and homologous series ideas such as shared functional group, general formula, incremental -CH2- changes, and trends in physical properties like boiling point, melting point, and density. Includes explanations of formula types (general, displayed, molecular, structural), crude oil composition and formation, and examiner guidance plus example data for alkanes.","Head to www.savemyexams. com for more awesome resources  \n AQA GCSE Chemistry: Combined Science  \n7.1 Hydrocarbons: Fuel & Feedstock  \nContents  \n Crude Oil, Hydrocarbons & Alkanes  Fractional Distillation & Petrochemicals  Properties of Hydrocarbons  \n Cracking & Alkenes  \nPage 1 of 20  \n© 2015 − 2025 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nCrude Oil, Hydrocarbons & Alkanes  \nWhat is organic chemistry?  \n Organic chemistry is the chemistry of carbon compounds  \n Carbon forms avast number of compounds because it can form strong covalent bonds with itself  \n This enables it to form long chains of carbon atoms, and hence an almost infinite variety of carbon compounds are known  \n Carbon always forms four covalent bonds which can be single, double or triple bonds  \n A functional group is a specific atom or group of atoms which confer certain physical and chemical properties onto the molecule  \n Organic molecules are classified by the dominant functional group on the molecule  \n Organic compounds with the same functional group, but a different number of carbon atoms, are said to belong to the same homologous series  \n Everytime a carbon atom is added to the chain, two hydrogen atoms are also added  \n Organic compounds can be represented ina number of ways  \nTypes of Formulae General Formulae  \n This type of formula tells you the composition of any member of a whole homologous series of organic compound  \n For example, all of the alkanes have the general formula CnH2n+2  \n This tells you that however many carbon atoms there are in the alkane, doubling this number and adding two will give you the number of hydrogen atoms present in the alkane  \nDisplayed Formulae  \n This shows the spatial arrangement of all the atoms and bonds in a molecule Molecular Formulae  \n This shows the actual number of each atom in a molecule, one molecule at a time  \nDisplayed and molecular formulae  \nPage 2 of 20  \n© 2015 − 2025 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nThe displayed formulae and molecular formulae of butane and butene  \nStructural Formulae  \n This gives enough information to make the structure clear, but most of the actual covalent bonds are omitted  \n Only important bonds are shown, such as double and triple bonds  \n Identical groups can be bracketed together  \nExample of a structural formula  \nPage 3 of 20  \n© 2015 − 2025 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nRepresenting structural formulae of pentane and two alkenes  \nWhat isa homologous series?  \n Things we can say about a homologous series:  \n each member has the same functional group  \n each member has the same general formula  \n each member has similar chemical properties  \n each subsequent member differs by-CH2-  \n members have gradually changing physical properties, for example, boiling point, melting point and density  \n As a homologous series is ascended, the size of the molecule increases  \n This has an effect on the physical properties, such as boiling point and density Homologous Series of Alkanes Table  \n\n| Name of alkane | Number of carbons | Chemical formula | Melting point / oC | State at room temperature | Boiling point / oC |\n| --- | --- | --- | --- | --- | --- |\n| Methane | 1 | CH4 | –182 | gas | –162 |\n| Ethane | 2 | C2 H6 | –183 | gas | –89 |\n| Propane | 3 | C3 H8 | –188 | gas | –42 |\n| Butane | 4 | C4 H10 | –138 | gas | –1 |\n\nPage 4 of 20  \n© 2015 − 2025 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nComposition of crude oil  \n Crude oil is a finite resource which we find in the Earth 's crust  \n Crude oil is a complex mixture of lots of different hydrocarbon compounds of differ","cbCairnyN7CM6i6A","https://ap.wps.com/l/cbCairnyN7CM6i6A","pdf",1512159,1,20,"English","en",105,"# 7.1 Hydrocarbons: Fuel & Feedstock\n## Crude Oil, Hydrocarbons & Alkanes\n### What is organic chemistry?\n### Types of formulae\n### What is a homologous series?\n### Composition of crude oil\n### Alkanes","[{\"question\":\"How do functional groups and homologous series relate in organic chemistry?\",\"answer\":\"A functional group is a specific atom or group that gives molecules particular physical and chemical properties. Organic molecules are classified by the dominant functional group, and compounds with the same functional group and different carbon counts belong to the same homologous series.\"},{\"question\":\"What are the different types of formulae and what does each show?\",\"answer\":\"General formulae show the composition pattern for members of a homologous series. Displayed formulae show atoms and bonds spatially. Molecular formulae show the actual number of each atom in one molecule. Structural formulae show enough information to make the structure clear, with most bonds omitted except important ones such as double or triple bonds.\"},{\"question\":\"What properties and trends are expected when moving up a homologous series of alkanes?\",\"answer\":\"Members of a homologous series share the same functional group, general formula, and similar chemical properties, and each successive member differs by -CH2-. As the series is ascended, molecule size increases, affecting physical properties such as boiling point, melting point, and density.\"}]","AQA GCSE Chemistry - 7.1 Hydrocarbons: Fuel & Feedstock - Organic chemistry fundamentals | PDF",1788601748,50,{"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":85,"head_meta":87,"extra_data":89,"updated_unix":28},"aqa-gcse-chemistry-71-hydrocarbons-fuel-feedstock-organic-chemistry-fundamentals","",{"@graph":36,"@context":84},[37,53,67],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,48,51],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":47},"https://docshare.wps.com/document/","Document",2,{"item":49,"name":12,"@type":43,"position":50},"https://docshare.wps.com/document/exam/",3,{"item":52,"name":13,"@type":43,"position":11},"https://docshare.wps.com/document/aqa-gcse-chemistry-71-hydrocarbons-fuel-feedstock-organic-chemistry-fundamentals/207921/",{"url":52,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":61,"encodingFormat":60,"isAccessibleForFree":62,"interactionStatistic":63},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":64,"interactionType":65,"userInteractionCount":4},"InteractionCounter",{"@type":66},"ViewAction",{"@type":68,"mainEntity":69},"FAQPage",[70,76,80],{"name":71,"@type":72,"acceptedAnswer":73},"How do functional groups and homologous series relate in organic chemistry?","Question",{"text":74,"@type":75},"A functional group is a specific atom or group that gives molecules particular physical and chemical properties. Organic molecules are classified by the dominant functional group, and compounds with the same functional group and different carbon counts belong to the same homologous series.","Answer",{"name":77,"@type":72,"acceptedAnswer":78},"What are the different types of formulae and what does each show?",{"text":79,"@type":75},"General formulae show the composition pattern for members of a homologous series. Displayed formulae show atoms and bonds spatially. Molecular formulae show the actual number of each atom in one molecule. Structural formulae show enough information to make the structure clear, with most bonds omitted except important ones such as double or triple bonds.",{"name":81,"@type":72,"acceptedAnswer":82},"What properties and trends are expected when moving up a homologous series of alkanes?",{"text":83,"@type":75},"Members of a homologous series share the same functional group, general formula, and similar chemical properties, and each successive member differs by -CH2-. As the series is ascended, molecule size increases, affecting physical properties such as boiling point, melting point, and density.","https://schema.org",{"og:url":52,"og:type":86,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":88,"canonical":52},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":91},[92,96,100,103,108,112,117,122,126,129,133],{"id":20,"doc_module":4,"doc_module_name":46,"category_name":93,"show_sort_weight":94,"slug":95},"Story & Novel",90,"story-novel",{"id":47,"doc_module":4,"doc_module_name":46,"category_name":97,"show_sort_weight":98,"slug":99},"Literature",80,"literature",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":101,"slug":102},70,"exam",{"id":104,"doc_module":4,"doc_module_name":46,"category_name":105,"show_sort_weight":106,"slug":107},5,"Comic",60,"comic",{"id":109,"doc_module":4,"doc_module_name":46,"category_name":110,"show_sort_weight":29,"slug":111},6,"Technology","technology",{"id":113,"doc_module":4,"doc_module_name":46,"category_name":114,"show_sort_weight":115,"slug":116},7,"Healthcare",40,"healthcare",{"id":118,"doc_module":4,"doc_module_name":46,"category_name":119,"show_sort_weight":120,"slug":121},8,"Research & Report",30,"research-report",{"id":123,"doc_module":4,"doc_module_name":46,"category_name":124,"show_sort_weight":21,"slug":125},9,"Religion & Spirituality","religion-spirituality",{"id":21,"doc_module":4,"doc_module_name":46,"category_name":127,"show_sort_weight":21,"slug":128},"World Cup","world-cup",{"id":130,"doc_module":4,"doc_module_name":46,"category_name":131,"show_sort_weight":130,"slug":132},10,"Lifestyle","lifestyle",{"id":134,"doc_module":4,"doc_module_name":46,"category_name":135,"show_sort_weight":104,"slug":136},19,"General","general"]