Quiz — Chimie_224101.pdf

Question 1 sur 10 20:00

[{"id":39450,"question":"Quel est le symbole chimique du sodium ?","option_a":"Na","option_b":"So","option_c":"Sn","option_d":"S","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique du sodium est Na, issu de son nom latin 'Natrium'.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Na\", \"b\": \"So\", \"c\": \"Sn\", \"d\": \"S\"}}","_debug_options_count":4},{"id":39451,"question":"Une solution de pH = 3 est-elle acide ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un pH inférieur à 7 indique une solution acide. pH = 3 est donc bien acide.","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":39452,"question":"Quelle est la formule chimique de l’eau ?","option_a":"H2O","option_b":"HO2","option_c":"H2O2","option_d":"O2H","option_e":"","option_f":"","bonne_reponse":"a","explication":"La formule chimique de l’eau est H2O, composée de deux atomes d’hydrogène et d’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\": \"H2O\", \"b\": \"HO2\", \"c\": \"H2O2\", \"d\": \"O2H\"}}","_debug_options_count":4},{"id":39453,"question":"La liaison covalente se forme entre :","option_a":"Un métal et un non-métal","option_b":"Deux non-métaux","option_c":"Deux métaux","option_d":"Un métal et un gaz noble","option_e":"","option_f":"","bonne_reponse":"b","explication":"Une liaison covalente se forme entre deux atomes de non-métaux qui partagent des électrons.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Un métal et un non-métal\", \"b\": \"Deux non-métaux\", \"c\": \"Deux ","_debug_options_count":4},{"id":39454,"question":"Le nombre d’Avogadro est égal à :","option_a":"6,02 × 10²²","option_b":"6,02 × 10²³","option_c":"6,02 × 10²⁴","option_d":"6,02 × 10²¹","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le nombre d’Avogadro est 6,02 × 10²³ mol⁻¹, représentant le nombre d’entités élémentaires dans une mole.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"6,02 × 10²²\", \"b\": \"6,02 × 10²³\", \"c\": \"6,02 × 10²⁴\", \"","_debug_options_count":4},{"id":39455,"question":"Une réaction chimique est-elle toujours réversible ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Toutes les réactions chimiques ne sont pas réversibles. Certaines sont irréversibles, comme la combustion.","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":39456,"question":"Quel est le groupe fonctionnel des alcools ?","option_a":"-COOH","option_b":"-OH","option_c":"-CHO","option_d":"-NH2","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le groupe fonctionnel des alcools est -OH (groupe hydroxyle).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"-COOH\", \"b\": \"-OH\", \"c\": \"-CHO\", \"d\": \"-NH2\"}}","_debug_options_count":4},{"id":39457,"question":"La masse molaire de l’oxygène (O) est d’environ :","option_a":"12 g\/mol","option_b":"14 g\/mol","option_c":"16 g\/mol","option_d":"32 g\/mol","option_e":"","option_f":"","bonne_reponse":"c","explication":"La masse molaire de l’oxygène (O) est d’environ 16 g\/mol. Pour O₂, elle est de 32 g\/mol.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"12 g\/mol\", \"b\": \"14 g\/mol\", \"c\": \"16 g\/mol\", \"d\": \"32 g\/mol\"}}","_debug_options_count":4},{"id":39458,"question":"Un acide de Brønsted-Lowry est une espèce chimique capable de :","option_a":"Céder un proton (H⁺)","option_b":"Capter un proton (H⁺)","option_c":"Céder un électron","option_d":"Capter un électron","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un acide de Brønsted-Lowry est une espèce chimique capable de céder un proton (H⁺).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Céder un proton (H⁺)\", \"b\": \"Capter un proton (H⁺)\", \"c\": \"C","_debug_options_count":4},{"id":39459,"question":"La configuration électronique du carbone (Z=6) est :","option_a":"1s² 2s² 2p⁴","option_b":"1s² 2s² 2p²","option_c":"1s² 2s¹ 2p³","option_d":"1s² 2s² 2p⁶","option_e":"","option_f":"","bonne_reponse":"b","explication":"La configuration électronique du carbone (Z=6) est 1s² 2s² 2p², car il a 6 électrons.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"1s² 2s² 2p⁴\", \"b\": \"1s² 2s² 2p²\", \"c\": \"1s² 2s¹ 2p³\", \"","_debug_options_count":4}]