{"id":2520,"date":"2016-08-23T15:51:24","date_gmt":"2016-08-23T15:51:24","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/?post_type=chapter&#038;p=2520"},"modified":"2016-08-28T07:13:14","modified_gmt":"2016-08-28T07:13:14","slug":"homogenous-and-heterogenous-mixtures","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/chapter\/homogenous-and-heterogenous-mixtures\/","title":{"raw":"Homogenous and Heterogenous Mixtures","rendered":"Homogenous and Heterogenous Mixtures"},"content":{"raw":"<h1 id=\"x-ck12-TWF0dGVyIGFuZCBDaGFuZ2U.-chapter\"><\/h1>\r\n<h1 id=\"x-ck12-U3Vic3RhbmNlcw..\">Homogeneous Mixture<\/h1>\r\n<div class=\"textbox learning-objectives\">\r\n<h3>Learning Objectives<\/h3>\r\n&nbsp;\r\n<ul>\r\n \t<li>Define mixture.<\/li>\r\n \t<li>Define homogeneous mixture.<\/li>\r\n \t<li>Give examples of homogeneous mixtures.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"x-ck12-data-objectives\"><\/div>\r\n<div class=\"textbox examples\">\r\n<h3>How do you like your coffee?<\/h3>\r\n<p id=\"x-ck12-ZGMwYWQzNGU2ZWYxMjk1OTI0ODk4MzZmZjM4OTk0MjA.-9nv\"><span class=\"x-ck12-img-inline\"><img src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210623\/20140811155005684855.jpeg\" alt=\"A cup of coffee is a homogenous mixture\" width=\"400\" \/><\/span><\/p>\r\n\r\n<h4 id=\"x-ck12-OWM3OTA5ZjU3ZmMxYTcyZGNjMWMwMTM1N2I2NGVlYjY.-vbu_5-3ut\">How do you like your coffee?<\/h4>\r\n<p id=\"x-ck12-OTM0N2I3MjAyMDMxNzMzYTFmNTczMmJmMzczYmJlYTY.-s9n\">Many people enjoy a cup of coffee at some point during the day. Some may drink it black, while others may put cream (or some dairy substitute) and sugar in their coffee. You can buy high-end coffee drinks at espresso stands (either sit-down or drive-through). Whatever your preference, you want the coffee to be the same at the beginning and the end of your drink. You don\u2019t want the components to separate out, but you want your drink to be uniform from top to bottom.<\/p>\r\n\r\n<\/div>\r\n&nbsp;\r\n<h3>Mixtures<\/h3>\r\n<p id=\"x-ck12-OGU5M2IzYjQ3MWQ4ZDhkMWRhOTM0ZGZjZjI5ODA4ZjQ.-ic2\">Ordinary table salt is called sodium chloride. It is considered a <strong>substance <\/strong>because it has a uniform and definite composition. All samples of sodium chloride are chemically identical. Water is also a pure substance. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water. A mixture is a physical blend of two or more components, each of which retains its own identity and properties in the <strong>mixture <\/strong>. Only the form of the salt is changed when it is dissolved into water. It retains its composition and properties.<\/p>\r\n\r\n<h3>Homogeneous Mixtures<\/h3>\r\n<p id=\"x-ck12-MWY0NDkxMDg0MGYwMDYxNmZiNDdkMjBiNjkxYzRiZmU.-bwx\">A <strong>homogeneous <\/strong>mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform.\u00a0 The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution.<\/p>\r\n<p id=\"x-ck12-MGYyZTU4NmQ5NDc1OTMxNzFmYWM5YTE0ZDYzZDI5ZTc.-f5m\">One characteristic of mixtures is that they can be separated into their components. Since each part of the mixture has not reacted with another part of the mixture, the identities of the different materials is unchanged.<\/p>\r\n\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Summary<\/h3>\r\n<ul id=\"x-ck12-MjJjYTE1ZDlmYjI2NzhkNTBhMjM0OGQ4OTM2ZTczNmQ.-mw3\">\r\n \t<li>A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.<\/li>\r\n \t<li>All solutions would be considered homogeneous.<\/li>\r\n<\/ul>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"textbox exercises\">\r\n<h3>Practice<\/h3>\r\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-ewl\" dir=\"ltr\"><em>Questions<\/em><\/p>\r\n<p id=\"x-ck12-Y2JlMjQ5M2YzMTNmNmRjMzNmZTI0MTMzYzcwM2IzZmY.-nrj\">Use the link below to answer the following questions:<\/p>\r\n<p id=\"x-ck12-NGY2MzRiNzY5Nzg1ZTlmOTUyZDgzZjNmYWUzMzU5Zjk.-c0m\"><a href=\"http:\/\/www.buzzle.com\/articles\/homogeneous-mixture-examples.html\">http:\/\/www.buzzle.com\/articles\/homogeneous-mixture-examples.html<\/a><\/p>\r\n\r\n<ol id=\"x-ck12-ZWJmZDBjMjFlYmFjMzhhOTI1M2RiOWI4Mjg2MjEwOGU.-wlt\">\r\n \t<li>What is the composition of gunpowder?<\/li>\r\n \t<li>Why would vinegar be considered a homogeneous mixture?<\/li>\r\n \t<li>Name three alloys and list what they are composed of.<\/li>\r\n<\/ol>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"textbox exercises\">\r\n<h3>Review<\/h3>\r\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-9iy\" dir=\"ltr\"><em>Questions<\/em><\/p>\r\n\r\n<ol id=\"x-ck12-NDUxZTEzYzJmYmEyMzljYTE4MjUxNGQxNzkxNWVhNDc.-omt\">\r\n \t<li>What is a mixture?<\/li>\r\n \t<li>What is a homogeneous mixture?<\/li>\r\n \t<li>Are all solutions homogeneous mixtures?<\/li>\r\n \t<li>Can homogeneous mixtures be separated into their components?<\/li>\r\n<\/ol>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"x-ck12-data-problem-set\">\r\n<h2>Glossary<\/h2>\r\n<\/div>\r\n<div class=\"x-ck12-data-vocabulary\">\r\n<ul id=\"x-ck12-YzA4NGRjOTQ4NTBjMGMwNGNkZTJkMGRkOTdlMzdkYTE.-feo\">\r\n \t<li><strong>homogeneous: <\/strong>A mixture in which the composition is uniform throughout the mixture.<\/li>\r\n \t<li><strong>mixture: <\/strong>consists of multiple substances put together.<\/li>\r\n \t<li><strong>substance: <\/strong>It has a uniform and definite composition.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<h1 id=\"x-ck12-SGV0ZXJvZ2VuZW91cyBNaXh0dXJlcw..\">Heterogeneous Mixtures<\/h1>\r\n<div class=\"textbox learning-objectives\">\r\n<h3>Learning Objectives<\/h3>\r\n<ul>\r\n \t<li>Define heterogeneous mixture.<\/li>\r\n \t<li>Define phase.<\/li>\r\n \t<li>Give examples of heterogeneous mixtures.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"x-ck12-data-objectives\"><\/div>\r\n<div class=\"textbox examples\">\r\n<h3>What's the best way to eat a bag of jelly beans?<\/h3>\r\n<p id=\"x-ck12-YWYxNDkzNTgzMjFlZTljZTc2NGZkY2I1YTcxNjRlNjk.-rgi\"><span class=\"x-ck12-img-inline\"><img src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210624\/20140811155005862381.jpeg\" alt=\"Handful of jelly beans\" width=\"450\" \/><\/span><\/p>\r\n<p id=\"x-ck12-YWYxNDkzNTgzMjFlZTljZTc2NGZkY2I1YTcxNjRlNjk.-bi6\"><strong>What's the best way to eat a bag of jelly beans? <\/strong><em><strong>\r\n<\/strong><\/em><\/p>\r\n<p id=\"x-ck12-YWY1MDk2MDdkOWIyNmE0YmVhMGNlNDdmNjMzOWIwYTg.-c3k\">Many people open the bag and eat all the candy, no matter what flavor each piece is. Others pick through the collection. They might say \u201cI don\u2019t like the orange ones.\u201d Or maybe they just care for the lemon ones. There are different kinds of jelly beans in the mixture and people will eat what they want and get rid of the rest.<\/p>\r\n\r\n<\/div>\r\n&nbsp;\r\n<h3>Heterogeneous Mixtures<\/h3>\r\n<p id=\"x-ck12-NTc3MTAxODk1OWI4MzFkMzMwOTg3MDU3NzRlMzRlZGM.-6cz\">A <strong>heterogeneous mixture <\/strong>is a mixture in which the composition is not uniform throughout the mixture. Vegetable soup is a heterogeneous mixture. Any given spoonful of soup will contain varying amounts of the different vegetables and other components of the soup.<\/p>\r\n<p id=\"x-ck12-Y2VhNDdkMDYzNjI5MTg1OWMzYmFkMDE2ZmNkZWEzMmM.-b9d\">A <strong>phase <\/strong>is any part of a sample that has a uniform composition and properties. By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases.\u00a0 When oil and water are combined, they do not mix evenly, but instead form two separate layers. Each of the layers is called a phase.<\/p>\r\n\r\n<div id=\"x-ck12-MjA2MjdkOGEzZTEzOWNmNjM1ODQ1MTdlNWRlMmNiYTU.-qux\" class=\"x-ck12-img-thumbnail x-ck12-nofloat\">\r\n<p id=\"x-ck12-afi\"><img id=\"x-ck12-OTgwNDUtMTM2MzE1OTk4Ny02Ni01Mi1JbWFnZS0tLTE4\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210626\/20140811155006540764.jpeg\" alt=\"Oil and water form a heterogeneous mixture\" longdesc=\"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-admin\/Oil%20and%20water%20do%20not%20mix%2C%20instead%20forming%20two%20distinct%20layers%20called%20phases.%20The%20oil%20phase%20is%20less%20dense%20than%20the%20water%20phase%20and%20so%20the%20oil%20floats%20on%20top%20of%20the%20water.\" \/><\/p>\r\n<strong>Figure 2.9<\/strong>\r\n<p id=\"x-ck12-ZGIzMjE5YTg0NjRhYjhhNzMxMmI1ZjMyNTAxMjE2NzI.-tav\">Oil and water do not mix, instead forming two distinct layers called phases. The oil phase is less dense than the water phase and so the oil floats on top of the water.<\/p>\r\n\r\n<\/div>\r\n<p id=\"x-ck12-MDBkM2RhNjc5MGI4YmM0M2VkZmRlMWFlNzRjNjdmNDI.-smp\">In the vegetable soup example, one phase would be the liquid soup itself. This phase has vitamins, minerals, and other components dissolved in the water. This phase would be homogeneous. The carrots, peas, corn, or other vegetables represent other phases of the soup. The various vegetables are not mixed evenly mixed in the soup, but are spread around at random.<\/p>\r\n<p id=\"x-ck12-MjU5YzY1YjM0NzJlYzIwMmU5NDU1NDU1MzU0MmJmMzQ.-joo\">There are a large number of heterogeneous mixtures around us. Soil is composed of a variety of substances and is often of different composition depending on the sample taken. One shovel may come up with dirt and grass while the next shovel could contain an earthworm.<\/p>\r\n<p id=\"x-ck12-NDMwZWI1MWRiYjI1YWQ1MDE3YzFkYzQyYzY4YjAwOTQ.-2z8\">Smog is another example of a heterogeneous mixture. This murky collection of pollutants can be a mixture of water and contaminants from burning gasoline or plastics mixed with nitric oxide derivatives and ozone. You can see that the smog distribution in the air illustrate below is not evenly spread out, but varies from one part of the atmosphere to another.<\/p>\r\n\r\n<div id=\"x-ck12-ZDc2ZmI1ZGM5ZjAwYTcxNjk2MDM5MGFjOThhN2U2ZGY.-klo\" class=\"x-ck12-img-postcard x-ck12-nofloat\">\r\n<p id=\"x-ck12-abf\"><img id=\"x-ck12-OTgwNDUtMTM2MzE2MDAyMS03My00MC1JbWFnZS0tLTE5\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210627\/20140811155006687138.jpeg\" alt=\"Smog is a heterogeneous mixture\" longdesc=\"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-admin\/Smog%20in%20New%20York%20City.\" \/><\/p>\r\n<strong>Figure 2.10<\/strong>\r\n<p id=\"x-ck12-YmY5ZTk2YTBmYzU4NjVlMTZlODAyYzMxNmUxMTQwNzE.-cgi\">Smog in New York City.<\/p>\r\n\r\n<\/div>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Summary<\/h3>\r\n<ul id=\"x-ck12-ODAxZTE0Yzg2OGE3MGE0YjAwODUwNGQ4ZTE0NTQ0MTk.-ga2\">\r\n \t<li>A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.<\/li>\r\n \t<li>A phase is a separate layer in a heterogeneous mixture.<\/li>\r\n<\/ul>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"textbox exercises\">\r\n<h3>Practice<\/h3>\r\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-1ub\" dir=\"ltr\"><em>Questions<\/em><\/p>\r\n<p id=\"x-ck12-Y2JlMjQ5M2YzMTNmNmRjMzNmZTI0MTMzYzcwM2IzZmY.-u8j\">Use the link below to answer the following questions:<\/p>\r\n<p id=\"x-ck12-MWUyNmQ2MmZlNWRkZTViMzZjOTJjODhkYmIyMTQ2MWI.-ges\"><a href=\"http:\/\/antoine.frostburg.edu\/chem\/senese\/101\/matter\/faq\/what-is-heterogeneous.shtml\">http:\/\/antoine.frostburg.edu\/chem\/senese\/101\/matter\/faq\/what-is-heterogeneous.shtml<\/a><\/p>\r\n\r\n<ol id=\"x-ck12-ZTM5MDljYzMwZGYyNTMzYzJkZjJiODYyZTMwYWM5Nzc.-hru\">\r\n \t<li>Why is a mixture of sand and sugar a heterogeneous mixture?<\/li>\r\n \t<li>What are the phases in a glass of iced tea?<\/li>\r\n \t<li>How is blood a heterogeneous mixture?<\/li>\r\n<\/ol>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"textbox exercises\">\r\n<h3>Review<\/h3>\r\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-htm\" dir=\"ltr\"><em>Questions<\/em><\/p>\r\n\r\n<ol id=\"x-ck12-YjQ5Y2E5OTQ1YTUwZmVhNjA0ZTJhYzg5NzNjNGMyOTY.-bpk\">\r\n \t<li>Define a heterogeneous mixture.<\/li>\r\n \t<li>Why is vegetable soup a heterogeneous mixture?<\/li>\r\n \t<li>How many phases are in a heterogeneous mixture?<\/li>\r\n<\/ol>\r\n<\/div>\r\n&nbsp;\r\n<div class=\"x-ck12-data-problem-set\">\r\n<h2>Glossary<\/h2>\r\n<\/div>\r\n<div class=\"x-ck12-data-vocabulary\">\r\n<ul id=\"x-ck12-ZDI0ZmUxYWQxY2JhMTJmNGU3ZDgyYWFkMzBmNjliYTY.-yuv\">\r\n \t<li><strong>heterogeneous mixture: <\/strong>A mixture in which the composition is not uniform throughout the mixture.<\/li>\r\n \t<li><strong>phase: <\/strong>A separate layer in a heterogeneous mixture.<\/li>\r\n<\/ul>\r\n<\/div>\r\n[reveal-answer q=\"836080\"]Show References[\/reveal-answer]\r\n[hidden-answer a=\"836080\"]\r\n<h2>References<\/h2>\r\n<ol>\r\n \t<li>Courtesy of Renee Comet and the National Cancer Institute. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:Coffee_NCI_Visuals_Online.jpg\">http:\/\/commons.wikimedia.org\/wiki\/File:Coffee_NCI_Visuals_Online.jpg <\/a>.<\/li>\r\n \t<li>User:Coolgirly88\/Wikipedia. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:100_1373.JPG\">http:\/\/commons.wikimedia.org\/wiki\/File:100_1373.JPG <\/a>.<\/li>\r\n \t<li>Flickr: Yortw. <a href=\"http:\/\/www.flickr.com\/photos\/yortw\/5470226807\/\">http:\/\/www.flickr.com\/photos\/yortw\/5470226807\/ <\/a>.<\/li>\r\n \t<li>Courtesy of Dr. Edwin P. Ewing, Jr.\/CDC. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:SmogNY.jpg\">http:\/\/commons.wikimedia.org\/wiki\/File:SmogNY.jpg <\/a>.<\/li>\r\n<\/ol>\r\n[\/hidden-answer]","rendered":"<h1 id=\"x-ck12-TWF0dGVyIGFuZCBDaGFuZ2U.-chapter\"><\/h1>\n<h1 id=\"x-ck12-U3Vic3RhbmNlcw..\">Homogeneous Mixture<\/h1>\n<div class=\"textbox learning-objectives\">\n<h3>Learning Objectives<\/h3>\n<p>&nbsp;<\/p>\n<ul>\n<li>Define mixture.<\/li>\n<li>Define homogeneous mixture.<\/li>\n<li>Give examples of homogeneous mixtures.<\/li>\n<\/ul>\n<\/div>\n<div class=\"x-ck12-data-objectives\"><\/div>\n<div class=\"textbox examples\">\n<h3>How do you like your coffee?<\/h3>\n<p id=\"x-ck12-ZGMwYWQzNGU2ZWYxMjk1OTI0ODk4MzZmZjM4OTk0MjA.-9nv\"><span class=\"x-ck12-img-inline\"><img decoding=\"async\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210623\/20140811155005684855.jpeg\" alt=\"A cup of coffee is a homogenous mixture\" width=\"400\" \/><\/span><\/p>\n<h4 id=\"x-ck12-OWM3OTA5ZjU3ZmMxYTcyZGNjMWMwMTM1N2I2NGVlYjY.-vbu_5-3ut\">How do you like your coffee?<\/h4>\n<p id=\"x-ck12-OTM0N2I3MjAyMDMxNzMzYTFmNTczMmJmMzczYmJlYTY.-s9n\">Many people enjoy a cup of coffee at some point during the day. Some may drink it black, while others may put cream (or some dairy substitute) and sugar in their coffee. You can buy high-end coffee drinks at espresso stands (either sit-down or drive-through). Whatever your preference, you want the coffee to be the same at the beginning and the end of your drink. You don\u2019t want the components to separate out, but you want your drink to be uniform from top to bottom.<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<h3>Mixtures<\/h3>\n<p id=\"x-ck12-OGU5M2IzYjQ3MWQ4ZDhkMWRhOTM0ZGZjZjI5ODA4ZjQ.-ic2\">Ordinary table salt is called sodium chloride. It is considered a <strong>substance <\/strong>because it has a uniform and definite composition. All samples of sodium chloride are chemically identical. Water is also a pure substance. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water. A mixture is a physical blend of two or more components, each of which retains its own identity and properties in the <strong>mixture <\/strong>. Only the form of the salt is changed when it is dissolved into water. It retains its composition and properties.<\/p>\n<h3>Homogeneous Mixtures<\/h3>\n<p id=\"x-ck12-MWY0NDkxMDg0MGYwMDYxNmZiNDdkMjBiNjkxYzRiZmU.-bwx\">A <strong>homogeneous <\/strong>mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform.\u00a0 The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution.<\/p>\n<p id=\"x-ck12-MGYyZTU4NmQ5NDc1OTMxNzFmYWM5YTE0ZDYzZDI5ZTc.-f5m\">One characteristic of mixtures is that they can be separated into their components. Since each part of the mixture has not reacted with another part of the mixture, the identities of the different materials is unchanged.<\/p>\n<div class=\"textbox key-takeaways\">\n<h3>Summary<\/h3>\n<ul id=\"x-ck12-MjJjYTE1ZDlmYjI2NzhkNTBhMjM0OGQ4OTM2ZTczNmQ.-mw3\">\n<li>A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.<\/li>\n<li>All solutions would be considered homogeneous.<\/li>\n<\/ul>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"textbox exercises\">\n<h3>Practice<\/h3>\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-ewl\" dir=\"ltr\"><em>Questions<\/em><\/p>\n<p id=\"x-ck12-Y2JlMjQ5M2YzMTNmNmRjMzNmZTI0MTMzYzcwM2IzZmY.-nrj\">Use the link below to answer the following questions:<\/p>\n<p id=\"x-ck12-NGY2MzRiNzY5Nzg1ZTlmOTUyZDgzZjNmYWUzMzU5Zjk.-c0m\"><a href=\"http:\/\/www.buzzle.com\/articles\/homogeneous-mixture-examples.html\">http:\/\/www.buzzle.com\/articles\/homogeneous-mixture-examples.html<\/a><\/p>\n<ol id=\"x-ck12-ZWJmZDBjMjFlYmFjMzhhOTI1M2RiOWI4Mjg2MjEwOGU.-wlt\">\n<li>What is the composition of gunpowder?<\/li>\n<li>Why would vinegar be considered a homogeneous mixture?<\/li>\n<li>Name three alloys and list what they are composed of.<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"textbox exercises\">\n<h3>Review<\/h3>\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-9iy\" dir=\"ltr\"><em>Questions<\/em><\/p>\n<ol id=\"x-ck12-NDUxZTEzYzJmYmEyMzljYTE4MjUxNGQxNzkxNWVhNDc.-omt\">\n<li>What is a mixture?<\/li>\n<li>What is a homogeneous mixture?<\/li>\n<li>Are all solutions homogeneous mixtures?<\/li>\n<li>Can homogeneous mixtures be separated into their components?<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"x-ck12-data-problem-set\">\n<h2>Glossary<\/h2>\n<\/div>\n<div class=\"x-ck12-data-vocabulary\">\n<ul id=\"x-ck12-YzA4NGRjOTQ4NTBjMGMwNGNkZTJkMGRkOTdlMzdkYTE.-feo\">\n<li><strong>homogeneous: <\/strong>A mixture in which the composition is uniform throughout the mixture.<\/li>\n<li><strong>mixture: <\/strong>consists of multiple substances put together.<\/li>\n<li><strong>substance: <\/strong>It has a uniform and definite composition.<\/li>\n<\/ul>\n<\/div>\n<h1 id=\"x-ck12-SGV0ZXJvZ2VuZW91cyBNaXh0dXJlcw..\">Heterogeneous Mixtures<\/h1>\n<div class=\"textbox learning-objectives\">\n<h3>Learning Objectives<\/h3>\n<ul>\n<li>Define heterogeneous mixture.<\/li>\n<li>Define phase.<\/li>\n<li>Give examples of heterogeneous mixtures.<\/li>\n<\/ul>\n<\/div>\n<div class=\"x-ck12-data-objectives\"><\/div>\n<div class=\"textbox examples\">\n<h3>What&#8217;s the best way to eat a bag of jelly beans?<\/h3>\n<p id=\"x-ck12-YWYxNDkzNTgzMjFlZTljZTc2NGZkY2I1YTcxNjRlNjk.-rgi\"><span class=\"x-ck12-img-inline\"><img decoding=\"async\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210624\/20140811155005862381.jpeg\" alt=\"Handful of jelly beans\" width=\"450\" \/><\/span><\/p>\n<p id=\"x-ck12-YWYxNDkzNTgzMjFlZTljZTc2NGZkY2I1YTcxNjRlNjk.-bi6\"><strong>What&#8217;s the best way to eat a bag of jelly beans? <\/strong><em><strong><br \/>\n<\/strong><\/em><\/p>\n<p id=\"x-ck12-YWY1MDk2MDdkOWIyNmE0YmVhMGNlNDdmNjMzOWIwYTg.-c3k\">Many people open the bag and eat all the candy, no matter what flavor each piece is. Others pick through the collection. They might say \u201cI don\u2019t like the orange ones.\u201d Or maybe they just care for the lemon ones. There are different kinds of jelly beans in the mixture and people will eat what they want and get rid of the rest.<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<h3>Heterogeneous Mixtures<\/h3>\n<p id=\"x-ck12-NTc3MTAxODk1OWI4MzFkMzMwOTg3MDU3NzRlMzRlZGM.-6cz\">A <strong>heterogeneous mixture <\/strong>is a mixture in which the composition is not uniform throughout the mixture. Vegetable soup is a heterogeneous mixture. Any given spoonful of soup will contain varying amounts of the different vegetables and other components of the soup.<\/p>\n<p id=\"x-ck12-Y2VhNDdkMDYzNjI5MTg1OWMzYmFkMDE2ZmNkZWEzMmM.-b9d\">A <strong>phase <\/strong>is any part of a sample that has a uniform composition and properties. By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases.\u00a0 When oil and water are combined, they do not mix evenly, but instead form two separate layers. Each of the layers is called a phase.<\/p>\n<div id=\"x-ck12-MjA2MjdkOGEzZTEzOWNmNjM1ODQ1MTdlNWRlMmNiYTU.-qux\" class=\"x-ck12-img-thumbnail x-ck12-nofloat\">\n<p id=\"x-ck12-afi\"><img decoding=\"async\" id=\"x-ck12-OTgwNDUtMTM2MzE1OTk4Ny02Ni01Mi1JbWFnZS0tLTE4\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210626\/20140811155006540764.jpeg\" alt=\"Oil and water form a heterogeneous mixture\" longdesc=\"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-admin\/Oil%20and%20water%20do%20not%20mix%2C%20instead%20forming%20two%20distinct%20layers%20called%20phases.%20The%20oil%20phase%20is%20less%20dense%20than%20the%20water%20phase%20and%20so%20the%20oil%20floats%20on%20top%20of%20the%20water.\" \/><\/p>\n<p><strong>Figure 2.9<\/strong><\/p>\n<p id=\"x-ck12-ZGIzMjE5YTg0NjRhYjhhNzMxMmI1ZjMyNTAxMjE2NzI.-tav\">Oil and water do not mix, instead forming two distinct layers called phases. The oil phase is less dense than the water phase and so the oil floats on top of the water.<\/p>\n<\/div>\n<p id=\"x-ck12-MDBkM2RhNjc5MGI4YmM0M2VkZmRlMWFlNzRjNjdmNDI.-smp\">In the vegetable soup example, one phase would be the liquid soup itself. This phase has vitamins, minerals, and other components dissolved in the water. This phase would be homogeneous. The carrots, peas, corn, or other vegetables represent other phases of the soup. The various vegetables are not mixed evenly mixed in the soup, but are spread around at random.<\/p>\n<p id=\"x-ck12-MjU5YzY1YjM0NzJlYzIwMmU5NDU1NDU1MzU0MmJmMzQ.-joo\">There are a large number of heterogeneous mixtures around us. Soil is composed of a variety of substances and is often of different composition depending on the sample taken. One shovel may come up with dirt and grass while the next shovel could contain an earthworm.<\/p>\n<p id=\"x-ck12-NDMwZWI1MWRiYjI1YWQ1MDE3YzFkYzQyYzY4YjAwOTQ.-2z8\">Smog is another example of a heterogeneous mixture. This murky collection of pollutants can be a mixture of water and contaminants from burning gasoline or plastics mixed with nitric oxide derivatives and ozone. You can see that the smog distribution in the air illustrate below is not evenly spread out, but varies from one part of the atmosphere to another.<\/p>\n<div id=\"x-ck12-ZDc2ZmI1ZGM5ZjAwYTcxNjk2MDM5MGFjOThhN2U2ZGY.-klo\" class=\"x-ck12-img-postcard x-ck12-nofloat\">\n<p id=\"x-ck12-abf\"><img decoding=\"async\" id=\"x-ck12-OTgwNDUtMTM2MzE2MDAyMS03My00MC1JbWFnZS0tLTE5\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/53\/2014\/08\/19210627\/20140811155006687138.jpeg\" alt=\"Smog is a heterogeneous mixture\" longdesc=\"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-admin\/Smog%20in%20New%20York%20City.\" \/><\/p>\n<p><strong>Figure 2.10<\/strong><\/p>\n<p id=\"x-ck12-YmY5ZTk2YTBmYzU4NjVlMTZlODAyYzMxNmUxMTQwNzE.-cgi\">Smog in New York City.<\/p>\n<\/div>\n<div class=\"textbox key-takeaways\">\n<h3>Summary<\/h3>\n<ul id=\"x-ck12-ODAxZTE0Yzg2OGE3MGE0YjAwODUwNGQ4ZTE0NTQ0MTk.-ga2\">\n<li>A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.<\/li>\n<li>A phase is a separate layer in a heterogeneous mixture.<\/li>\n<\/ul>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"textbox exercises\">\n<h3>Practice<\/h3>\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-1ub\" dir=\"ltr\"><em>Questions<\/em><\/p>\n<p id=\"x-ck12-Y2JlMjQ5M2YzMTNmNmRjMzNmZTI0MTMzYzcwM2IzZmY.-u8j\">Use the link below to answer the following questions:<\/p>\n<p id=\"x-ck12-MWUyNmQ2MmZlNWRkZTViMzZjOTJjODhkYmIyMTQ2MWI.-ges\"><a href=\"http:\/\/antoine.frostburg.edu\/chem\/senese\/101\/matter\/faq\/what-is-heterogeneous.shtml\">http:\/\/antoine.frostburg.edu\/chem\/senese\/101\/matter\/faq\/what-is-heterogeneous.shtml<\/a><\/p>\n<ol id=\"x-ck12-ZTM5MDljYzMwZGYyNTMzYzJkZjJiODYyZTMwYWM5Nzc.-hru\">\n<li>Why is a mixture of sand and sugar a heterogeneous mixture?<\/li>\n<li>What are the phases in a glass of iced tea?<\/li>\n<li>How is blood a heterogeneous mixture?<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"textbox exercises\">\n<h3>Review<\/h3>\n<p id=\"x-ck12-NmNlM2JkYzM5ZTU0NDcyNTAzOGUwZTg3Yjc3MWRiMWU.-htm\" dir=\"ltr\"><em>Questions<\/em><\/p>\n<ol id=\"x-ck12-YjQ5Y2E5OTQ1YTUwZmVhNjA0ZTJhYzg5NzNjNGMyOTY.-bpk\">\n<li>Define a heterogeneous mixture.<\/li>\n<li>Why is vegetable soup a heterogeneous mixture?<\/li>\n<li>How many phases are in a heterogeneous mixture?<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"x-ck12-data-problem-set\">\n<h2>Glossary<\/h2>\n<\/div>\n<div class=\"x-ck12-data-vocabulary\">\n<ul id=\"x-ck12-ZDI0ZmUxYWQxY2JhMTJmNGU3ZDgyYWFkMzBmNjliYTY.-yuv\">\n<li><strong>heterogeneous mixture: <\/strong>A mixture in which the composition is not uniform throughout the mixture.<\/li>\n<li><strong>phase: <\/strong>A separate layer in a heterogeneous mixture.<\/li>\n<\/ul>\n<\/div>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q836080\">Show References<\/span><\/p>\n<div id=\"q836080\" class=\"hidden-answer\" style=\"display: none\">\n<h2>References<\/h2>\n<ol>\n<li>Courtesy of Renee Comet and the National Cancer Institute. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:Coffee_NCI_Visuals_Online.jpg\">http:\/\/commons.wikimedia.org\/wiki\/File:Coffee_NCI_Visuals_Online.jpg <\/a>.<\/li>\n<li>User:Coolgirly88\/Wikipedia. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:100_1373.JPG\">http:\/\/commons.wikimedia.org\/wiki\/File:100_1373.JPG <\/a>.<\/li>\n<li>Flickr: Yortw. <a href=\"http:\/\/www.flickr.com\/photos\/yortw\/5470226807\/\">http:\/\/www.flickr.com\/photos\/yortw\/5470226807\/ <\/a>.<\/li>\n<li>Courtesy of Dr. Edwin P. Ewing, Jr.\/CDC. <a href=\"http:\/\/commons.wikimedia.org\/wiki\/File:SmogNY.jpg\">http:\/\/commons.wikimedia.org\/wiki\/File:SmogNY.jpg <\/a>.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n","protected":false},"author":1507,"menu_order":6,"template":"","meta":{"_candela_citation":"[]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-2520","chapter","type-chapter","status-publish","hentry"],"part":2324,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapters\/2520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/wp\/v2\/users\/1507"}],"version-history":[{"count":6,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapters\/2520\/revisions"}],"predecessor-version":[{"id":3477,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapters\/2520\/revisions\/3477"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/parts\/2324"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapters\/2520\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/wp\/v2\/media?parent=2520"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/pressbooks\/v2\/chapter-type?post=2520"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/wp\/v2\/contributor?post=2520"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/umes-cheminter\/wp-json\/wp\/v2\/license?post=2520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}