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Connects the chemistry to real-world uses such as safety for trick-or-treaters, medical and scientific lighting, and emergency illumination for astronauts.",{"@graph":14,"@context":72},[15,34,55],{"@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/how-glow-sticks-glow-solve-each-problem-486958/486958/",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/how-glow-sticks-glow-solve-each-problem-486958/486958.png","ImageObject",300,407,{"name":42,"@type":43},"acoobca","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-31","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":33},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What central idea does the passage develop about glowing objects?","Question",{"text":62,"@type":63},"Different objects can make or store light through chemistry instead of heat.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"What does the author say about the moment you snap a glow stick?",{"text":67,"@type":63},"Snap-opening causes internal separation to end, allowing the chemicals to mix and release glowing light.",{"name":69,"@type":60,"acceptedAnswer":70},"How does chilling affect a glow stick’s glow?",{"text":71,"@type":63},"Chilling slows the chemical reaction, dimming the light but stretching it out for hours.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},486958,1790829346,{"code":4,"msg":81,"data":82},"success",[83,87,91,94,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":92,"slug":93},70,"exam",{"id":95,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},5,"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":95,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"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":33,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":110,"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":117,"preview_page_count":4},3985747870733,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","You've probably been told that making light means making heat, like a lightbulb that burns your fingers or a campfire that glows orange. So how can a plastic tube in your hand shine bright green in the dark and stay perfectly cool? That trick is called chemiluminescence, which is just a fancy word for light made by a chemical reaction instead of by heat. A fresh glow stick looks like an ordinary tube of colored plastic, but inside it hides a tiny sealed glass vial floating in liquid. Snap it, shake it, and suddenly it beams like a captured firefly.  \nThat snap you hear is the whole secret cracking open. Inside the tube are  \ntwo separate chemicals, and the little glass vial keeps one of them apart from the other until you bend the plastic and shatter it. When the chemicals mix, their molecules trade energy and release it as glowing light rather than warmth. Real fireflies use almost the same idea, blinking their bodies on and off with a natural chemical reaction called bioluminescence. So when you wave a glow stick on Halloween, you're basically holding a battery-free flashlight powered by chemistry.  \nBecause that glow comes from a reaction, its speed depends on temperature, and here's where things get surprising. Warm the tube in your hands or drop it in hot water, and the chemicals react faster, so it burns brighter but fades sooner. Chill it in the refrigerator, and the reaction slows to a crawl, making the light dim but stretching it out for hours. Some trick-or-treaters even tuck a used glow stick in the freezer overnight to save a little light for the next night. It won't glow forever, but the cold really does hit the pause button on the chemistry.  \nNot every glow needs a snap, though, and the stars stuck on some kids' ceilings prove it. Glow-in-the-dark paint and plastic use phosphorescence, meaning they soak up light like a sponge soaks up water and then leak it back out slowly in the dark. Hold one under a lamp for a few minutes, flip off the lights, and the stored energy escapes as a soft green shine. This is a completely different trick from a glow stick: no chemicals get used up, so the same star can charge and glow thousands of times. The catch is that it needs a fresh drink of light every time before it can perform.  \nAll this cool glowing does more than decorate a costume, and that's why it still matters  \ntoday. Reflective tape on a trick-or-treater's bag or sleeves bounces a car's headlights straight back at the driver, making a small kid easy to spot on a dark street. Doctors, deep-sea scientists, and search teams all rely on chemiluminescent light sticks because they need bright light with no spark, no battery, and no heat. Astronauts have even carried glow sticks into space as a safe emergency light source. The next time you crack one open and it hums to life in your palm, remember you're not lighting a fire, you're mixing one.  \nHow Glow Sticks Glow  \nName:  \n\n| Solve each problem.\u003Cbr>Use the article to answer the question.\u003Cbr>1) What is the central idea the passage develops about glowing objects?\u003Cbr>A. Fireflies and glow sticks were both invented in laboratories long ago\u003Cbr>B. Glow sticks are the brightest light source available on Halloween night\u003Cbr>C. Different objects can make or store light through chemistry instead of heat\u003Cbr>D. Cold temperatures are always better than warmth for making light |  |  |  |  | Answers\u003Cbr>1.  \u003Cbr>2.  \u003Cbr>3.   |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 2) What point of view about glowing does the author express in the passage?\u003Cbr>A. That the science behind everyday glowing is genuinely surprising and worth noticing\u003Cbr>B. That glow sticks are dangerous and should be handled with great care\u003Cbr>C. That fireflies make a brighter light than any human invention can\u003Cbr>D. That glow-in-the-dark toys are better than every other Halloween item |  |  |  |  | 4.  \u003Cbr>5.  \u003Cbr>6.  \u003Cbr>7.   |  |  |  |  |  |\n| 3) As used in paragraph 1, what d","cbCaioibo3Y2hlk9","https://ap.wps.com/l/cbCaioibo3Y2hlk9","pdf",81678,"English","# Central idea\n## Point of view\n## Meaning of “chemiluminescence”\n## Purpose of the fourth paragraph\n## Safety for trick-or-treaters\n## What happens when you snap a glow stick\n## Why chilling makes it last longer","[{\"question\":\"What central idea does the passage develop about glowing objects?\",\"answer\":\"Different objects can make or store light through chemistry instead of heat.\"},{\"question\":\"What does the author say about the moment you snap a glow stick?\",\"answer\":\"Snap-opening causes internal separation to end, allowing the chemicals to mix and release glowing light.\"},{\"question\":\"How does chilling affect a glow stick’s glow?\",\"answer\":\"Chilling slows the chemical reaction, dimming the light but stretching it out for hours.\"}]","How Glow Sticks Glow - Solve Each Problem | PDF",1790807497]