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A 15-mark communication section adds short-answer classification for reaction categories.",{"@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/snc2d-unit-4-test-chemistry-80-marks-total/459214/",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/snc2d-unit-4-test-chemistry-80-marks-total/459214.png","ImageObject",300,407,{"name":42,"@type":43},"mieayamfan","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-19","2026-09-30",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 topics are covered in the multiple-choice Knowledge section?","Question",{"text":63,"@type":64},"The questions cover ionic versus covalent compounds, valence electrons, polyatomic ions, naming compounds (including Roman numerals), acid-base identification, and classification of reaction types. It also includes conservation of mass and balanced chemical equations.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How does the test evaluate reaction classification?",{"text":68,"@type":64},"It asks students to label each reaction as synthesis, decomposition, single displacement, or double displacement. Reaction examples include metal-oxygen formation, salt/acid reactions, and neutralization to produce water and a salt.",{"name":70,"@type":61,"acceptedAnswer":71},"What does the communication section focus on?",{"text":72,"@type":64},"The communication section contains short answers where each given equation must be identified as one of the four reaction categories: synthesis, decomposition, single displacement, or double displacement.","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},459214,1790791737,{"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":115,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":144},962090893677,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","SNC2D Unit Test – Chemistry  \nSNC2D Unit 4 Test  \n(80 Marks Total)  \nName:   \nSignature:   \nMarks obtained:  \nPercentage:  \nAnswers:  \nSection 1 True/False  \n\n| Question | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| Answer |  |  |  |  |  |  |  |  |  |  |\n| Question | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |\n| Answer |  |  |  |  |  |  |  |  |  |  |\n| Question | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |\n| Answer |  |  |  |  |  |  |  |  |  |  |\n\n**NOTE: ANSWER MULTIPLE CHOICE QUESTIONS IN THE TABLE ABOVE**  \nKNOWLEDGE 30 Marks  \nPart (A) Multiple Choice 30 Marks  \n**NOTE: ANSWER MULTIPLE CHOICE QUESTIONS IN THE TABLE ON PAGE 1**  \n1. Compounds formed by a metal giving an electron to a non-metal are:  \n(a) covalent (c) ionic  \n(b) solutions (d) elements  \n2. How many valence electrons are found in a neutral atom of Na?  \n(a) one (c) six ( b) three (d) two  \n3. When naming a compound  \n(a) the non-metal is always named first.  \n(b) the metal gets an-ide ending.  \n(c) the metal is always named second.  \n(d) the non-metal gets an-ide ending.  \n4. A polyatomic ion  \n(a) is made of more than one element.  \n(b) has no charge.  \n(c) only contains metals.  \n(d) always has a negative valence.  \n5. In a covalent compound, how do atoms complete their outer electron shells?  \n(a) transferring electrons (c) creating electrons  \n(b) sharing electrons (d) destroying electrons  \n6. Which one of the following has more than one possible valence charge?  \n(a) sodium (c) iron  \n( b) magnesium (d) lithium  \n7. Why does burning a log seem to disobey the Law of Conservation of Mass?  \n(a) The log remains the same.  \n(b) The gases escape and can’t be measured.  \n(c) The log actually gains mass when burned.  \n(d) The log gains mass since gases attach themselves to the log.  \n8. Which of the following is not an acid?  \n(a) HCl (b) NaCl  \n(c) HF  \n(d) H2SO4  \n9. What gas is given off when zinc reacts with hydrochloric acid?(a) hydrogen gas (c) oxygen gas (b) chlorine gas (d) zinc gas  \n10.What is the most common polyatomic ion found in bases?(a) SO4-2 (c) Cr2O7-2 ( b) CO3-2 (d) OH-1  \n11. Sodium and hydrochloric acid react to produce a salt and hydrogen gas.  \nNa + HCL à NaCl + H2 What kind of reaction is this?  \n(a) decomposition (c) double displacement  \n(b) single displacement (d) synthesis  \n12. Neutralization reactions occur between (a) a non-metallic oxide and a basic oxide.  \n(b) an acid and a base.  \n(c) a salt and water.  \n(d) an acid and chocolate milk.  \n13. Neutralization reactions are a special type of:  \n(a) synthesis reaction (c) single displacement reaction  \n(b) double displacement reaction (d) combustion reaction  \n14.Which is the correct formula for iron (II) chloride?  \n(a) Fe2Cl2 (c) FeCl  \n(b) Fe2Cl (d) FeCl2  \n15. Heating sodium bicarbonate, to produce water, CO2 , and sodium carbonate NaHCO3 à NaCO3 +H2O + CO2 is a:  \n(a) decomposition reaction  \n(b) synthesis reaction (c) single displacement reaction (d) double displacement reaction  \n16.Which of the following are named using Roman numerals?  \n(a) Compounds containing metals with multiple valences.  \n(b) Compounds containing two non-metals.(c) Compounds containing a metal and a polyatomic ion (d) Compounds containing two polyatomic ions.  \n17.Which equation is not balanced?(a) 2C2 H6 + 7O2----- > 4CO2 + 6H2O (b) C3 H8 + 5O2----- > 3CO2 + 4H2O  \n(c) C6 H 18 + 10O2- > 5CO2 + 9H2O + 2CO + C  \n(d) C5 H 12 + 8O2----- > 5CO2 + 6H2O  \n18. Copper (II) oxide is produced when copper reacts with oxygen by heating it ina flame. The reaction is Cu + O2 à CuO. What type of reaction is this?  \n(a) synthesis (c) single displacement  \n(b) decomposition (d) double displacement  \n19. Which one of the following describes a base?  \n(a) It turns blue litmus paper red.  \n(b) It dissolves in water to produce hydroxide ions.  \n(c) It dissolves in water to produce hydrogen ions.  \n(d) It reacts with carbonates to produce carb","cbCaiikv3RettxsW","https://ap.wps.com/l/cbCaiikv3RettxsW","pdf",104851,"English","# Section 1 True/False\n# Knowledge (30 Marks)\n## Part (A) Multiple Choice (30 Marks)\n# Communication (15 Marks)\n## Short Answers","[{\"question\":\"What topics are covered in the multiple-choice Knowledge section?\",\"answer\":\"The questions cover ionic versus covalent compounds, valence electrons, polyatomic ions, naming compounds (including Roman numerals), acid-base identification, and classification of reaction types. It also includes conservation of mass and balanced chemical equations.\"},{\"question\":\"How does the test evaluate reaction classification?\",\"answer\":\"It asks students to label each reaction as synthesis, decomposition, single displacement, or double displacement. Reaction examples include metal-oxygen formation, salt/acid reactions, and neutralization to produce water and a salt.\"},{\"question\":\"What does the communication section focus on?\",\"answer\":\"The communication section contains short answers where each given equation must be identified as one of the four reaction categories: synthesis, decomposition, single displacement, or double displacement.\"}]","SNC2D Unit 4 Test - Chemistry - 80 Marks Total | PDF",1790755462,23]