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		<property:Deepen rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Dans ce cas précis, si on utilise du thé chaud, quel facteur augmentant la densité va primer ? La chaleur du thé (il y aurait alors mélange en versant l'eau froide), ou le sucre du thé (le thé reste au fond) ?</property:Deepen>
		<property:Description rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Peut-on faire flotter de l'eau sur du thé sans que les deux liquides se mélangent?</property:Description>
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		<property:Explanations rdf:datatype="http://www.w3.org/2001/XMLSchema#string">=== '''De manière simple''' ===
Le thé c'est de l'eau sucrée avec des arômes. Cette eau est "alourdie" par le sucre, elle est plus dense que l'eau seule.

Donc le thé reste au fond du verre car il est plus dense que l'eau.

=== '''Questions sans réponses''' ===
Expérience à réaliser avec du thé chaud ou froid ? De l'eau froide est plus dense que de l'eau chaude, et reste au fond d'un verre où les deux sont en présence.</property:Explanations>
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		<property:Observations rdf:datatype="http://www.w3.org/2001/XMLSchema#string">L'eau est au-dessus du thé, les deux liquides ne se sont pas mélangés.</property:Observations>
		<property:Step_Content rdf:datatype="http://www.w3.org/2001/XMLSchema#string">* Découper une lamelle de papier de la taille du diamètre du verre et la plier en 3, en formant un U.</property:Step_Content>
		<property:Step_Content rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Mettre la base du U à la surface du thé dans le verre, en faisant attention de juste frôler le liquide. Attention à ne pas détremper la feuille.</property:Step_Content>
		<property:Step_Content rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Verser ensuite, tout doucement, l'eau sur le papier, puis enlever délicatement le papier.</property:Step_Content>
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