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Organisation et transformations de la matière - Physique-Chimie 3e

Exemple d'exercice parmi les 88 exercices du chapitre

On réalise l'expérience représentée par les schémas suivants :

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Éprouvette graduée contenant de l'huile

{"init": {"range": [[-7.0, 7.0], [-17.5, 13.32]], "scale": [20, 20]}, "path": [[[[-3.0, -10.0], [-3.0, 7.32], [3.0, 7.32], [3.0, -10.0], [-3.0, -10.0]], {"stroke": "none", "fill": "#dbcf5c", "fill-opacity": "0.7"}], [[[-2.5, -9.5], [-2.5, -7.5], [-0.5, -7.5], [-0.5, -9.5], [-2.5, -9.5]], {"fill": "#afe3d6", "opacity": "0.9", "stroke": "none"}], [[[-2.5, -7.5], [-2.0, -7.0], [0.0, -7.0], [-0.5, -7.5], [-2.5, -7.5]], {"fill": "#adf0df", "opacity": "0.9", "stroke": "none"}], [[[-0.5, -7.5], [0.0, -7.0], [0.0, -9.0], [-0.5, -9.5], [-0.5, -7.5]], {"fill": "#53b099", "opacity": "0.9", "stroke": "none"}], [[[0.0, -8.5], [0.0, -6.5], [2.0, -6.5], [2.0, -8.5], [0.0, -8.5]], {"fill": "#afe3d6", "opacity": "0.9", "stroke": "none"}], [[[0.0, -6.5], [0.5, -6.0], [2.5, -6.0], [2.0, -6.5], [0.0, -6.5]], {"fill": "#adf0df", "opacity": "0.9", "stroke": "none"}], [[[2.0, -6.5], [2.5, -6.0], [2.5, -8.0], [2.0, -8.5], [2.0, -6.5]], {"fill": "#53b099", "opacity": "0.9", "stroke": "none"}], [[[-5.0, -15.5], [-5.0, -10.5], [5.0, -10.5], [5.0, -15.5], [-5.0, -15.5]]], [[[-4.0, -10.5], [-4.0, -10.0], [4.0, -10.0], [4.0, -10.5], [-4.0, -10.5]]], [[[-4.5, -13.5], [-4.5, -11.5], [0.0, -11.5], [0.0, -13.5], [-4.5, -13.5]], {"fill": "#dbdbdb"}]], "arc": [[[0.0, 12.32], [6.0, 6.0], 225.0, 315.0, true, {"stroke": "", "fill": "white"}]], "line": [[[-3.0, -10.0], [-3.0, 10.0], {"subtype": "segment"}], [[3.0, 10.0], [4.0, 9.0], {"subtype": "segment"}], [[3.0, -10.0], [3.0, 10.0], {"subtype": "segment"}], [[-4.0, -10.0], [4.0, -10.0], {"subtype": "segment"}], [[2.0, -6.6], [3.0, -6.6], {"subtype": "segment"}], [[2.0, -3.2], [3.0, -3.2], {"subtype": "segment"}], [[2.0, 0.1999999999999993], [3.0, 0.1999999999999993], {"subtype": "segment"}], [[2.0, 3.5999999999999996], [3.0, 3.5999999999999996], {"subtype": "segment"}], [[2.0, 7.0], [3.0, 7.0], {"subtype": "segment"}], [[2.5, -9.32], [3.0, -9.32], {"subtype": "segment"}], [[2.5, -8.64], [3.0, -8.64], {"subtype": "segment"}], [[2.5, -7.96], [3.0, -7.96], {"subtype": "segment"}], [[2.5, -7.279999999999999], [3.0, -7.279999999999999], {"subtype": "segment"}], [[2.5, -5.92], [3.0, -5.92], {"subtype": "segment"}], [[2.5, -5.24], [3.0, -5.24], {"subtype": "segment"}], [[2.5, -4.56], [3.0, -4.56], {"subtype": "segment"}], [[2.5, -3.88], [3.0, -3.88], {"subtype": "segment"}], [[2.5, -2.5199999999999996], [3.0, -2.5199999999999996], {"subtype": "segment"}], [[2.5, -1.8399999999999999], [3.0, -1.8399999999999999], {"subtype": "segment"}], [[2.5, -1.1600000000000001], [3.0, -1.1600000000000001], {"subtype": "segment"}], [[2.5, -0.4800000000000004], [3.0, -0.4800000000000004], {"subtype": "segment"}], [[2.5, 0.8800000000000008], [3.0, 0.8800000000000008], {"subtype": "segment"}], [[2.5, 1.5600000000000005], [3.0, 1.5600000000000005], {"subtype": "segment"}], [[2.5, 2.24], [3.0, 2.24], {"subtype": "segment"}], [[2.5, 2.92], [3.0, 2.92], {"subtype": "segment"}], [[2.5, 4.279999999999999], [3.0, 4.279999999999999], {"subtype": "segment"}], [[2.5, 4.960000000000001], [3.0, 4.960000000000001], {"subtype": "segment"}], [[2.5, 5.640000000000001], [3.0, 5.640000000000001], {"subtype": "segment"}], [[2.5, 6.32], [3.0, 6.32], {"subtype": "segment"}]], "label": [[[0.0, -6.6], "10\\:mL", "center", {}], [[0.0, -3.2], "20\\:mL", "center", {}], [[0.0, 0.1999999999999993], "30\\:mL", "center", {}], [[0.0, 3.5999999999999996], "40\\:mL", "center", {}], [[0.0, 7.0], "50\\:mL", "center", {}], [[0.0, 9.5], "50\\:mL", "center", {"color": "red"}], [[-2.5, -12.5], "44,16\\:g", "center", {}]], "circle": [[[4.0, -12.5], 0.5, {"fill": "#00FF00"}], [[2.0, -12.5], 0.5, {"fill": "#FF0000"}]]}

Ajout de quelqus glaçons dans l'éprouvette

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Fusion des glaçons

Quel est le volume d'huile introduit dans l'éprouvette ?

Quel est le volume de glaçons introduit dans l'éprouvette ?

Quelle est la masse de glaçons ?

A-t-on une augmentation, une stabilité ou une diminution du volume dans l'éprouvette ?

Exercice du chapitre suivant Revenir au choix du thème Revenir au choix du niveau

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