[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.klh.sk\/na-tieto-pokusy-postaci-voda-uz-ste-ich-skusali\/#Article","mainEntityOfPage":"https:\/\/www.klh.sk\/na-tieto-pokusy-postaci-voda-uz-ste-ich-skusali\/","headline":"Na tieto pokusy posta\u010d\u00ed voda! U\u017e ste ich sk\u00fa\u0161ali?","name":"Na tieto pokusy posta\u010d\u00ed voda! U\u017e ste ich sk\u00fa\u0161ali?","description":"Fascinuje V\u00e1s ch\u00e9mia, fyzika alebo naopak oby\u010dajn\u00e9 jednoduch\u00e9 veci. Aj jednoduch\u00e9 procesy m\u00f4\u017eu by\u0165 postaven\u00e9 na zlo\u017eitom fungovan\u00ed. Pozrite sa na vodu… Voda je v\u017edy poruke a m\u00f4\u017eeme ju pou\u017ei\u0165 nielen na pitie, varenie, um\u00fdvanie \u010di upratovanie. Je ide\u00e1lnou l\u00e1tkou pre dom\u00e1ce pokusy. Ak sa zauj\u00edmate o vedu, nemus\u00edte vlastni\u0165 s\u00fakromn\u00e9 laborat\u00f3rium, aby ste sa […]","datePublished":"2024-05-03","dateModified":"2024-05-03","author":{"@type":"Person","@id":"https:\/\/www.klh.sk\/author\/#Person","name":"","url":"https:\/\/www.klh.sk\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/aa13f0f1a5b61a2deba1492ce3bb4afe8e77d91eeb44c23db0ee08765a93abad?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/aa13f0f1a5b61a2deba1492ce3bb4afe8e77d91eeb44c23db0ee08765a93abad?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"klh.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.klh.sk\/wp-content\/uploads\/jacek-dylag-Vve7XkiUq_Y-unsplash_4.jpg","url":"https:\/\/www.klh.sk\/wp-content\/uploads\/jacek-dylag-Vve7XkiUq_Y-unsplash_4.jpg","height":0,"width":0},"url":"https:\/\/www.klh.sk\/na-tieto-pokusy-postaci-voda-uz-ste-ich-skusali\/","about":["Veda"],"wordCount":496,"articleBody":"Fascinuje V\u00e1s ch\u00e9mia, fyzika alebo naopak oby\u010dajn\u00e9 jednoduch\u00e9 veci. Aj jednoduch\u00e9 procesy m\u00f4\u017eu by\u0165 postaven\u00e9 na zlo\u017eitom fungovan\u00ed. Pozrite sa na vodu… Voda je v\u017edy poruke a m\u00f4\u017eeme ju pou\u017ei\u0165 nielen na pitie, varenie, um\u00fdvanie \u010di upratovanie. Je ide\u00e1lnou l\u00e1tkou pre dom\u00e1ce pokusy. Ak sa zauj\u00edmate o vedu, nemus\u00edte vlastni\u0165 s\u00fakromn\u00e9 laborat\u00f3rium, aby ste sa mohli venova\u0165 jednoduch\u00e9mu b\u00e1daniu fungovania vo svete. V\u010faka vode si m\u00f4\u017eete pripravi\u0165 pokusy a experimenty v okruhu gravit\u00e1cie, svetla, hustoty \u010di biol\u00f3gie. Neviete ako na to? Sk\u00faste si pokus s vodou a olejom. Je jednoduch\u00fd a v\u0161etko potrebn\u00e9 n\u00e1jdete doma.\u00a0Hustota vody a in\u00fdch l\u00e1tok – svet je rozli\u010dn\u00fd a jedine\u010dn\u00fdNa tento pokus m\u00f4\u017eete pou\u017ei\u0165 dve men\u0161ie n\u00e1doby, do ktor\u00fdch d\u00e1te vodu a olej – samostatne. Priprav\u00edte si n\u00e1dobu, ktor\u00e1 je objemovo v\u00e4\u010d\u0161ia ako voda a olej spolu. Aby v\u00e1m obsah nepretiekol. Do v\u00e4\u010d\u0161ej n\u00e1doby teda nalejte vodu. Vezmite n\u00e1dobu s olejom a vlejte ju do vody. Olej m\u00e1 men\u0161iu hustotu ako voda a preto sa s vodou nepremie\u0161a, ale bude tvori\u0165 bublinky alebo o\u010dk\u00e1, ktor\u00e9 bud\u00fa vo vode pl\u00e1va\u0165. Po ust\u00e1len\u00ed hladiny m\u00f4\u017eeme vidie\u0165, ako olej pl\u00e1va v jednej vrstve nad vodou. Tento jav m\u00f4\u017eeme vidie\u0165 napr\u00edklad aj v pr\u00edpade nede\u013enej polievky, na ktorej pl\u00e1vaj\u00fa mastn\u00e9 o\u010dk\u00e1 po hladine. Zistili sme teda vy\u0161\u0161iu v\u00e1hu vody ako oleja. Ak v\u0161ak zmie\u0161ame napr\u00edklad malinovku s vodou zis\u0165ujeme, \u017ee sa zmie\u0161ali bez v\u00fdrazn\u00fdch odch\u00fdlok. Znamen\u00e1 to teda rovnak\u00fa hustotu medzi t\u00fdmito dvoma l\u00e1tkami. Podobn\u00e9 pokusy m\u00f4\u017eete zopakova\u0165 aj so sirupom, medom alebo in\u00fdmi tekut\u00fdmi l\u00e1tkami.\u00a0Vedeli ste o vode aj toto?Voda m\u00f4\u017ee ma\u0165 r\u00f4zne skupenstv\u00e1. Pevn\u00e9, tekut\u00e9 a plynn\u00e9. So zmenou skupenstva a teploty vody prich\u00e1dza aj zmena jej hustoty. Pr\u00e1ve preto n\u00e1m v poh\u00e1ri limon\u00e1dy pl\u00e1vaj\u00fa \u013eadov\u00e9 kocky, ale nepadn\u00fa na dno. Ak v\u0161ak chcete ok\u00fazli\u0165 deti vrhnite sa na pokus s cukrom a vodou. Na konci pr\u00edde nielen oku lahodiaca ale aj sladk\u00e1 odmena. Zohrejte vodu a nasypte do nej cukor. Mus\u00edte prida\u0165 to\u013eko cukru, aby sa u\u017e nedal rozp\u00fa\u0161\u0165a\u0165 – voda toti\u017e pojme iba ur\u010dit\u00e9 mno\u017estvo l\u00e1tky. Ak chcete ma\u0165 pokus zauj\u00edmavej\u0161\u00ed, pridajte potravin\u00e1rske farbivo. Roztok vlejte napr\u00edklad do poh\u00e1ra alebo men\u0161ej zav\u00e1raninovej f\u013ea\u0161e. Vlo\u017ete do nej \u0161pajd\u013eu a nechajte na parapete. Voda by sa nemala pr\u00edli\u0161 r\u00fdchlo odparova\u0165. Postupn\u00fdm odparovan\u00edm sa na \u0161pajdli za\u010dn\u00fa tvori\u0165 kry\u0161t\u00e1liky cukru. V\u00fdsledkom s\u00fa n\u00e1dhern\u00e9 ve\u013ek\u00e9 kry\u0161t\u00e1ly. Vzorce, ktor\u00e9 tvoria s\u00fa zauj\u00edmav\u00e9 a prepracovan\u00e9.\u00a0                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Na tieto pokusy posta\u010d\u00ed voda! 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