Quiz — pdf_COR_CHIM110_EXAM_06_session1.pdf

Question 1 sur 10 20:00

[{"id":17189,"question":"Quel est le symbole chimique de l'atome d'oxygène ?","option_a":"O","option_b":"Ox","option_c":"O2","option_d":"Oxy","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est 'O', représentant un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"O\", \"b\": \"Ox\", \"c\": \"O2\", \"d\": \"Oxy\"}}","_debug_options_count":4},{"id":17190,"question":"Une réaction chimique conserve toujours la masse totale des réactifs.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, selon la loi de conservation de la masse (Lavoisier), la masse totale des réactifs est égale à celle des produits.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":17191,"question":"Quelle est la formule chimique de l'eau ?","option_a":"H2O","option_b":"HO2","option_c":"H2O2","option_d":"OH2","option_e":"","option_f":"","bonne_reponse":"a","explication":"La formule chimique de l'eau est H2O, composée de 2 atomes d'hydrogène et 1 atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"H2O\", \"b\": \"HO2\", \"c\": \"H2O2\", \"d\": \"OH2\"}}","_debug_options_count":4},{"id":17192,"question":"Une solution acide a un pH :","option_a":"Supérieur à 7","option_b":"Égal à 7","option_c":"Inférieur à 7","option_d":"Nul","option_e":"","option_f":"","bonne_reponse":"c","explication":"Une solution acide a un pH inférieur à 7, indiquant une concentration élevée en ions H+.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Supérieur à 7\", \"b\": \"Égal à 7\", \"c\": \"Inférieur à 7\", \"d\":","_debug_options_count":4},{"id":17193,"question":"La combustion du carbone dans le dioxygène produit du dioxyde de carbone.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, la réaction C + O2 → CO2 est une combustion complète du carbone.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":17194,"question":"Quel est le nombre d'électrons de valence de l'atome de sodium (Na) ?","option_a":"1","option_b":"2","option_c":"8","option_d":"11","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'atome de sodium (Na) a 1 électron de valence, car il appartient à la famille des alcalins (groupe 1).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"1\", \"b\": \"2\", \"c\": \"8\", \"d\": \"11\"}}","_debug_options_count":4},{"id":17195,"question":"Une transformation physique modifie la nature chimique de la matière.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Faux, une transformation physique (comme la fusion ou l'évaporation) ne modifie pas la nature chimique de la matière.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":17196,"question":"Quelle est la charge électrique d'un ion chlorure (Cl-) ?","option_a":"Positive","option_b":"Négative","option_c":"Neutre","option_d":"Variable","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'ion chlorure (Cl-) a une charge négative, car il a gagné un électron.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Positive\", \"b\": \"Négative\", \"c\": \"Neutre\", \"d\": \"Variable\"}}","_debug_options_count":4},{"id":17197,"question":"La dissolution du sel (NaCl) dans l'eau est une transformation :","option_a":"Chimique","option_b":"Physique","option_c":"Nucléaire","option_d":"Biologique","option_e":"","option_f":"","bonne_reponse":"b","explication":"La dissolution du sel dans l'eau est une transformation physique, car il n'y a pas de modification de la nature chimique des espèces.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Chimique\", \"b\": \"Physique\", \"c\": \"Nucléaire\", \"d\": \"Biologique\"}","_debug_options_count":4},{"id":17198,"question":"Quel est le nom de la famille d'éléments chimiques qui réagissent violemment avec l'eau ?","option_a":"Gaz nobles","option_b":"Halogenes","option_c":"Alcalins","option_d":"Métaux de transition","option_e":"","option_f":"","bonne_reponse":"c","explication":"Les alcalins (groupe 1) réagissent violemment avec l'eau, comme le sodium ou le potassium.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Gaz nobles\", \"b\": \"Halogenes\", \"c\": \"Alcalins\", \"d\": \"Métaux de ","_debug_options_count":4}]