{"id":148944,"date":"2024-10-06T05:30:08","date_gmt":"2024-10-06T05:30:08","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=148944"},"modified":"2024-10-06T05:30:11","modified_gmt":"2024-10-06T05:30:11","slug":"which-of-the-following-does-not-describe-a-physical-property-of-iron","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/10\/06\/which-of-the-following-does-not-describe-a-physical-property-of-iron\/","title":{"rendered":"Which of the following does not describe a physical property of iron"},"content":{"rendered":"\n<p>Which of the following does not describe a physical property of iron?<br>A Iron is silvery-white or gray in color.<br>B Iron has a boiling point of about 3,000\u00b0C.<br>C Iron is a magnetic element.<br>D Iron and sulfur react to form iron sulfide.<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>The correct answer is <strong>D. Iron and sulfur react to form iron sulfide.<\/strong><\/p>\n\n\n\n<p>This statement describes a <strong>chemical property<\/strong> of iron, not a physical one. To understand why, let\u2019s break down the distinction between physical and chemical properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Physical Properties<\/h3>\n\n\n\n<p>A <strong>physical property<\/strong> of a substance is one that can be observed or measured without changing the substance\u2019s chemical identity. Some of the common physical properties of materials include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Color:<\/strong> For iron, this is typically silvery-white or gray (as mentioned in Option A).<\/li>\n\n\n\n<li><strong>Boiling point and melting point:<\/strong> Iron has a high boiling point, approximately 3,000\u00b0C (as stated in Option B), and a melting point of around 1,538\u00b0C. These are physical properties because they describe the state changes of iron without altering its chemical composition.<\/li>\n\n\n\n<li><strong>Magnetism:<\/strong> Iron is a magnetic element (as noted in Option C), meaning it can be attracted to magnets or be magnetized. This is a physical trait because it relates to iron\u2019s behavior in a magnetic field without changing its structure.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Chemical Properties<\/h3>\n\n\n\n<p>In contrast, a <strong>chemical property<\/strong> describes a substance\u2019s ability to undergo a chemical reaction and form new substances. These properties are only observed when a chemical change occurs.<\/p>\n\n\n\n<p>In Option D, the reaction of iron with sulfur to form <strong>iron sulfide<\/strong> is an example of a chemical change. When iron reacts with sulfur, a new compound (iron sulfide, FeS) is formed, which has different properties from the original elements. This transformation indicates a change in the chemical identity of iron, which makes it a chemical property rather than a physical one.<\/p>\n\n\n\n<p>Therefore, Option D does not describe a physical property of iron.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following does not describe a physical property of iron?A Iron is silvery-white or gray in color.B Iron has a boiling point of about 3,000\u00b0C.C Iron is a magnetic element.D Iron and sulfur react to form iron sulfide. The Correct Answer and Explanation is : The correct answer is D. Iron and sulfur [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-148944","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/148944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=148944"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/148944\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=148944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=148944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=148944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}