{"id":3873,"date":"2023-01-09T10:33:40","date_gmt":"2023-01-09T10:33:40","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3873"},"modified":"2025-09-22T05:32:44","modified_gmt":"2025-09-22T05:32:44","slug":"s-6-e-structure-of-a-flame","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-6-e-structure-of-a-flame\/","title":{"rendered":"s-6.e Structure Of A Flame"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Structure Of A Flame<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAF4tYQYg6g\/Cck26uY0Cr2XRkCeosEgbQ\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF4tYQYg6g&#x2F;Cck26uY0Cr2XRkCeosEgbQ&#x2F;watch?utm_content=DAF4tYQYg6g&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">structure of flame<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-869a5c0b6b78055316c8d0186252dcbd\" style=\"color:#74008b\"><strong>key notes :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"367\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/01\/Untitled-design-33.png\" alt=\"\" class=\"wp-image-14794\" style=\"width:621px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/01\/Untitled-design-33.png 750w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/01\/Untitled-design-33-300x147.png 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-a033e6fdc79b74dd430c0c13eab5b85e\" style=\"color:#000060\"><strong>Definition of a Flame<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">A flame is the visible, gaseous part of a fire that emits light and heat. It is produced when a substance burns.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-52b6ec23f990dcdb8135eea5b936d036\" style=\"color:#000060\"><strong>Parts of a Flame<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"220\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-186.png\" alt=\"\" class=\"wp-image-18926\" style=\"width:349px;height:auto\"\/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\">A flame has three distinct regions, each with different characteristics:<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Innermost Zone (Dark Zone)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Closest to the wick or fuel source.<\/li>\n\n\n\n<li>Contains unburnt wax vapors or fuel.<\/li>\n\n\n\n<li>Does not emit light and is the least hot part of the flame.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Middle Zone (Luminous Zone)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Yellow and bright in appearance.<\/li>\n\n\n\n<li>Incomplete combustion occurs due to limited oxygen.<\/li>\n\n\n\n<li>Produces soot (tiny carbon particles) and emits light.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Outermost Zone (Non-Luminous Zone)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Blue in color and barely visible.<\/li>\n\n\n\n<li>Complete combustion occurs here due to ample oxygen.<\/li>\n\n\n\n<li>Hottest part of the flame.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-align-left has-text-color has-link-color has-large-font-size wp-elements-f97e6b2c65d7b4e135a60cdec238e93a\" style=\"color:#000060\"><strong>Types of Flames<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-188-1024x576.png\" alt=\"\" class=\"wp-image-18928\" style=\"width:407px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-188-1024x576.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-188-300x169.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-188-768x432.png 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-188.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Luminous Flame<\/strong>: Produces light, occurs due to incomplete combustion, and is yellow (e.g., candle flame).<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Non-Luminous Flame<\/strong>: Does not produce much light, occurs due to complete combustion, and is blue (e.g., Bunsen burner flame).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-949dc67b12fbe320678bbbe9235fe0be\" style=\"color:#000060\"><strong>Temperature Distribution in a Flame<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The <strong>hottest part<\/strong> is the outermost zone.<\/li>\n\n\n\n<li>The <strong>coolest part<\/strong> is the innermost zone.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-6b71b67e3dafe06b6f54a1adf1ba9fa9\" style=\"color:#000060\"><strong>Flame Colors and Their Causes<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-1024x768.jpg\" alt=\"\" class=\"wp-image-18950\" style=\"width:364px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-1024x768.jpg 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-300x225.jpg 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-768x576.jpg 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-1536x1152.jpg 1536w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-2048x1536.jpg 2048w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/Colored_Campfire_-_panoramio-1568x1176.jpg 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Yellow Flame<\/strong>: Caused by incomplete combustion and the glow of carbon particles.<\/li>\n\n\n\n<li><strong>Blue Flame<\/strong>: Indicates complete combustion with sufficient oxygen.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-0fe9ed6347d86fcdb4ba468f87cdd29b\" style=\"color:#000060\"><strong>Importance of Oxygen<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Oxygen availability determines the type and efficiency of combustion in a flame.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-f9b3ef4c5f8906f128444bb2aee78c14\" style=\"color:#000060\"><strong>Applications of Flames<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Used in cooking, welding, and scientific experiments (e.g., Bunsen burner).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3e562d6a0b262e46ee22def622f8a266\" style=\"color:#000060\"><strong>Safety Precautions<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Ensure proper ventilation when using flames to avoid accumulation of harmful gases.<\/li>\n\n\n\n<li>Avoid placing flammable materials near an open flame.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-403e87ad1f32c7440380517fa9ce1414\" style=\"color:#000060\"><strong>Practical Demonstration<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Observe a candle flame to identify its zones.<\/li>\n\n\n\n<li>Use a Bunsen burner to compare luminous and non-luminous flames.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81561\/501\/200\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-69.png\" alt=\"\" class=\"wp-image-7637\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-69.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-69-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-69-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81646\/552\/103\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-68.png\" alt=\"\" class=\"wp-image-7638\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-68.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-68-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-68-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Structure Of A Flame structure of flame by Delta publications key notes : Definition of a Flame Parts of a Flame A flame has three distinct regions, each with different characteristics: Innermost Zone (Dark Zone) Middle Zone (Luminous Zone) Outermost Zone (Non-Luminous Zone) Types of Flames Temperature Distribution in a Flame Flame Colors and Their<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-6-e-structure-of-a-flame\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-6.e Structure Of A Flame&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3873","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3873"}],"version-history":[{"count":25,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3873\/revisions"}],"predecessor-version":[{"id":21507,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3873\/revisions\/21507"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}