Quiz interactif : Les fondamentaux des sciences en 7ème année

Question 1 sur 10 10:00

[{"id":34323,"question":"Quel est l'état physique de l'eau à température ambiante ?","option_a":"Solide","option_b":"Liquide","option_c":"Gazeux","option_d":"Plasma","option_e":"","option_f":"","bonne_reponse":"B","explication":"À température ambiante (environ 20°C), l'eau est à l'état liquide.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34324,"question":"Une transformation physique modifie la nature de la matière.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Une transformation physique ne modifie pas la nature de la matière, contrairement à une transformation chimique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34325,"question":"Quelle est la formule chimique de l'eau ?","option_a":"CO2","option_b":"H2O","option_c":"O2","option_d":"N2","option_e":"","option_f":"","bonne_reponse":"B","explication":"La formule chimique de l'eau est H2O, composée de deux atomes d'hydrogène et un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34326,"question":"Quel est le principal constituant de l'air ?","option_a":"Oxygène","option_b":"Azote","option_c":"Dioxyde de carbone","option_d":"Vapeur d'eau","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'azote est le principal constituant de l'air, représentant environ 78% de sa composition.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34327,"question":"La combustion du bois est une transformation physique.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La combustion du bois est une transformation chimique, car elle produit de nouvelles substances (cendres, gaz).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34328,"question":"Quel est le symbole chimique de l'oxygène ?","option_a":"O","option_b":"Ox","option_c":"O2","option_d":"H2O","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le symbole chimique de l'oxygène est O.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34329,"question":"Quelle est la température de fusion de la glace ?","option_a":"0°C","option_b":"100°C","option_c":"-10°C","option_d":"25°C","option_e":"","option_f":"","bonne_reponse":"A","explication":"La température de fusion de la glace est 0°C.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34330,"question":"Une solution acide a un pH inférieur à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une solution acide a effectivement un pH inférieur à 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34331,"question":"Quel gaz est produit lors de la photosynthèse ?","option_a":"Oxygène","option_b":"Dioxyde de carbone","option_c":"Azote","option_d":"Hydrogène","option_e":"","option_f":"","bonne_reponse":"A","explication":"Lors de la photosynthèse, les plantes produisent de l'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34332,"question":"Quelle est la masse volumique de l'eau ?","option_a":"1 g\/cm³","option_b":"0,5 g\/cm³","option_c":"2 g\/cm³","option_d":"1,5 g\/cm³","option_e":"","option_f":"","bonne_reponse":"A","explication":"La masse volumique de l'eau est d'environ 1 g\/cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]