{"id":626,"date":"2020-05-10T13:44:18","date_gmt":"2020-05-10T10:44:18","guid":{"rendered":"https:\/\/blog.edu.turku.fi\/scienceed\/?p=626"},"modified":"2020-09-25T13:41:19","modified_gmt":"2020-09-25T10:41:19","slug":"baking-soda-rocket","status":"publish","type":"post","link":"https:\/\/blog.edu.turku.fi\/scienceed\/2020\/05\/10\/baking-soda-rocket\/","title":{"rendered":"Baking soda rocket"},"content":{"rendered":"<div class=\"result-shield-container tlid-copy-target\">\n<p><span class=\"tlid-translation translation\" lang=\"en\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-624 size-medium\" src=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2020\/05\/raket-201x250.png\" alt=\"Rocket.\" width=\"201\" height=\"250\" \/>Now that the weather is getting a little warmer, it can be fun to experiment a bit with water. In this case, build a rocket.<\/span><\/p>\n<p>What you need is:<\/p>\n<\/div>\n<ul>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">Film jar (or similar jar with snap cap)<\/span><\/li>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">Baking soda<\/span><\/li>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">Water<br \/>\n<\/span><\/li>\n<\/ul>\n<div class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\"><span class=\"tlid-translation translation\" lang=\"en\">Pour 1 teaspoon baking powder into the film jar. Fill up to about half the jar with water.<br \/>\nQuickly snap on the lid, shake once, set it upside down and take a step back.<\/span><\/span><strong>Explanation<\/strong><br \/>\nBaking powder consists of about 30% bicarbonate, 40% some acid (eg sodium pyrophosphate) and 30% moisture resistant substance (eg corn starch). The baking powder reacts with itself when it comes into contact with water &#8211; bicarbonate and acid react to form a salt (which depends on the acid) as well as carbon dioxide.<br \/>\nThe carbon dioxide is in gaseous form, which means it takes up a lot of space. The more carbon dioxide that is formed, the more pressure inside the film can increase (this high pressure is due to the fact that the carbon dioxide molecules are forced on a small volume while they collide a lot with each other and the film can walls). When the pressure becomes sufficiently large, the carbon dioxide molecules shoot out of the film can, while the lid flies off and the film can lift.<\/p>\n<p><strong>Experiment<\/strong><br \/>\nTo make this study an experiment, try answering one of the following<br \/>\nissues. Don&#8217;t forget to make a hypothesis and explain the result.<br \/>\n\uf0b7 Will the rocket become more powerful if you use hot water?<br \/>\n\uf0b7 Will the rocket become more powerful if you use more water?<br \/>\n\uf0b7 Will the rocket become more powerful if you use more baking powder?<br \/>\n\uf0b7 Will the rocket become more powerful if you use a larger jar with a lid, as well as more water and baking powder?<\/p>\n<p><strong>Variants<\/strong><\/p>\n<\/div>\n<ul>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\"><strong>I<\/strong>t is possible to make a launch pad by attaching an empty towel roll to a rigid paper, and then placing the film can in the towel roll.<\/span><\/li>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">It is also possible to mix baking powder and water in a tightly sealed bag and see how the bag expands (and possibly cracks).<\/span><\/li>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">Instead of baking powder, you can use some type of effervescent tablet, e.g. Samarin or a vitamin C tablet. These also usually contain bicarbonate and some acid.<\/span><\/li>\n<li class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\">Even more powerful is the reaction if you pour vinegar into water instead of water.<\/span><\/li>\n<\/ul>\n<div class=\"result-shield-container tlid-copy-target\"><span class=\"tlid-translation translation\" lang=\"en\"><br \/>\nThank you to the Experiment Caf\u00e9 in Sigtuna for this experiment.<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Now that the weather is getting a little warmer, it can be fun to experiment a bit with water. In this case, build a rocket. What you need is: Film jar (or similar jar with snap cap) Baking soda Water Pour 1 teaspoon baking powder into the film jar. Fill up to about half the &hellip; <a href=\"https:\/\/blog.edu.turku.fi\/scienceed\/2020\/05\/10\/baking-soda-rocket\/\" class=\"more-link\">Forts\u00e4tt l\u00e4sa<span class=\"screen-reader-text\"> \u201dBaking soda rocket\u201d<\/span><\/a><\/p>\n","protected":false},"author":2590,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30020],"tags":[],"class_list":["post-626","post","type-post","status-publish","format-standard","hentry","category-english"],"_links":{"self":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/users\/2590"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/comments?post=626"}],"version-history":[{"count":2,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/626\/revisions"}],"predecessor-version":[{"id":675,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/626\/revisions\/675"}],"wp:attachment":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/media?parent=626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/categories?post=626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/tags?post=626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}