[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-657745-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-657745-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","dot-and-cross-diagrams-worksheet-teachers","Dot-and-Cross Diagrams Worksheet - Teachers","","Worksheet for teaching chemical bonding using dot-and-cross diagrams. Covers Part A electronic configurations and completing ionic and covalent tables (valence electrons, noble-gas configuration, ions, and ratios) plus drawing full-shell diagrams for selected ions and molecules. Includes instructions for simulation activities to build ionic compounds and covalent molecules, spot mistakes in student diagrams, and answer questions on ion charges, formula deduction, electron-based bonding explanations, and comparisons of bonding formation.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/dot-and-cross-diagrams-worksheet-teachers/657745/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/dot-and-cross-diagrams-worksheet-teachers/657745.png","ImageObject",300,407,{"name":42,"@type":43},"Aldword","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-29","2026-10-26",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What do the symbols × and • represent in the sodium chloride dot-and-cross diagram?","Question",{"text":63,"@type":64},"× marks electrons from the sodium atom and • marks electrons from the chlorine atom.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How do you decide which ions form for an ionic compound in the worksheet?",{"text":68,"@type":64},"Assign valence electrons from the metal and non-metal, then determine ion charges based on electron loss or gain (or sharing) to reach a noble gas configuration.",{"name":70,"@type":61,"acceptedAnswer":71},"What is the key difference between single and double covalent bonds in terms of shared pairs?",{"text":72,"@type":64},"A single bond contains one shared pair, while a double bond contains two shared pairs.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},657745,1793030445,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},6,"Technology",50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":55,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145},2336478940917,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Chemical Bonding  \nDot-and-Cross Diagrams  \nSimulation: [edtechsims.com/dot-and-cross-diagrams](edtechsims.com/dot-and-cross-diagrams)[ ](edtechsims.com/dot-and-cross-diagrams)[Name: ____________________ Class: ______ Date:](Name: ____________________ Class: ______ Date:)  \nPart A: Electronic Configurations  \n_______  \nA1 Complete Table 1. [8]  \n\n| Element | Proton number | Electronic configuration | Valence electrons | To get a noble gas configuration, it… | Ion formed |\n| --- | --- | --- | --- | --- | --- |\n| Sodium, Na | 11 | 2.8.1 | 1 | Loses 1 electron | Na⁺ |\n| Magnesium, Mg | 12 |  |  |  |  |\n| Calcium, Ca | 20 |  |  |  |  |\n| Oxygen, O | 8 | 2.6 | 6 | Gains 2 (or shares 2) | O²⁻ |\n| Chlorine, Cl | 17 |  |  |  |  |\n| Nitrogen, N | 7 |  |  |  |  |\n| Carbon, C | 6 |  |  |  |  |\n| Hydrogen, H | 1 |  |  |  |  |\n\nTable 1  \nPart B: Ionic Compounds  \nOn the sim: Open the Builder and choose Ionic compounds. Build NaCl, MgO and MgCl₂ , transferring electrons from the metal to the non-metal.  \nFig. 1 shows the dot-and-cross diagram of sodium chloride, with all shells shown. (× = electrons from Na, • = electrons from Cl)  \nFig. 1  \nB1 Complete the rules for drawing ionic dot-and-cross diagrams. [4]  \nThe metal atom ______________ its valence electrons and the non-metal atom ______________  \nthem. Each ion is drawn inside ______________ , with its ______________ written at the top right.  \nB2 Complete Table 2. [6]  \n\n| Compound | Electrons lost by each metal atom | Cation | Anion | Ratio of cation : anion | Formula |\n| --- | --- | --- | --- | --- | --- |\n| Sodium chloride | 1 | Na⁺ | Cl⁻ | 1 : 1 | NaCl |\n| Magnesium oxide |  |  |  |  |  |\n| Magnesium chloride |  |  |  |  |  |\n| Sodium oxide |  |  |  |  |  |\n| Calcium fluoride |  |  |  |  |  |\n| Potassium sulfide |  |  |  |  |  |\n\nTable 2  \nB3 Draw dot-and-cross diagrams, showing all shells, for magnesium oxide and calcium fluoride. [4]  \nMagnesium oxide, MgO  \nCalcium fluoride, CaF₂  \nOn the sim: In the Builder, choose Covalent molecules. Build H₂O, NH₃ , CO₂ and N₂ , placing shared pairs in the overlap between atoms.  \nC1 Complete the sentences. [3]  \nIn a covalent bond, a pair of electrons is   between two non-metal atoms. A double bond contains   shared pairs. Electrons in the outer shell that are not shared are called   (non-bonding electrons) .  \nC2 Complete Table 3. [10]  \n\n| Molecule | Number of shared pairs in the molecule | Type(s) of bond | Lone pairs on the central atom |\n| --- | --- | --- | --- |\n| H₂ | 1 | Single | 0 (on each H) |\n| Cl₂ |  |  |  |\n| HCl |  |  |  |\n| H₂O | 2 | Single | 2 (on O) |\n| NH₃ |  |  |  |\n| CH₄ |  |  |  |\n| O₂ |  |  |  |\n| N₂ |  |  |  |\n| CO₂ |  |  |  |\n| C₂ H₄ |  |  |  |\n\nTable 3  \nC3 Draw dot-and-cross diagrams, showing all shells, for water, ammonia, carbon dioxide and  \nnitrogen. [8]  \nWater, H₂O  \nAmmonia, NH₃  \nCarbon dioxide, CO₂  \nNitrogen, N₂  \nPart D: Spot the Mistake  \nOn the sim: Open the Spot the Mistake tab and try the diagrams there. Then find the mistake in each diagram below.  \nD1 A student's diagram of sodium chloride. [2]  \nMistake and correction:  \n................................ ................................ ................................ ................................ .........................  \nD2 A student's diagram of magnesium oxide. [2]  \nMistake and correction:  \n................................ ................................ ................................ ................................ .........................  \nD3 A student's diagram of water. [2]  \nMistake and correction:  \nD4 A student's diagram of nitrogen. [2]  \nMistake and correction:  \n................................ ................................ ................................ ................................ .........................  \nE1 Aluminium (2 .8.3) reacts with oxygen (2 .6) to form aluminium oxide.  \n(a) State the charges on the two ions formed. [2]  \n...............................................................................","cbCaivHwtaMbkpKP","https://ap.wps.com/l/cbCaivHwtaMbkpKP","pdf",432156,11,"English","# Part A: Electronic Configurations\n## A1 Complete Table 1\n# Part B: Ionic Compounds\n## B1 Complete the rules for drawing ionic diagrams\n## B2 Complete Table 2\n## B3 Draw diagrams\n# Part C: Covalent Molecules\n## C1 Complete the sentences\n## C2 Complete Table 3\n## C3 Draw diagrams\n# Part D: Spot the Mistake\n## D1–D4 Student diagram corrections\n# Part E: Electron and formula questions\n## E1–E3 Charges, formulas, and comparisons","[{\"question\":\"What do the symbols × and • represent in the sodium chloride dot-and-cross diagram?\",\"answer\":\"× marks electrons from the sodium atom and • marks electrons from the chlorine atom.\"},{\"question\":\"How do you decide which ions form for an ionic compound in the worksheet?\",\"answer\":\"Assign valence electrons from the metal and non-metal, then determine ion charges based on electron loss or gain (or sharing) to reach a noble gas configuration.\"},{\"question\":\"What is the key difference between single and double covalent bonds in terms of shared pairs?\",\"answer\":\"A single bond contains one shared pair, while a double bond contains two shared pairs.\"}]","Dot-and-Cross Diagrams Worksheet - Teachers | PDF",1792988019,28]