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0 [{"id":567142,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"en funci\u00f3n del peso, los metales se pueden subdividir en dos: grupos: metales \u2026\u2026\u2026\u2026\u2026\u2026... y metales pesados","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567148,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Con el agregado de cromo se obtiene \u2026\u2026\u2026\u2026\u2026... inoxidable resistente a la corrosi\u00f3n. ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567153,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Si bien generalmente el t\u00e9rmino pl\u00e1stico se utiliza para indicar \u2026\u2026\u2026\u2026\u2026... (resinas) a los que se les han a\u00f1adido aditivos (materias modificantes) para cambiar sus caracter\u00edsticas de calidad, dureza, color, etc. ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567145,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"La clasificaci\u00f3n de los materiales en funci\u00f3n de su \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026... pueden ser: naturales y artificiales.","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567150,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Otras aleaciones son las de n\u00edquel, de cinc, de plomo, etc. Teniendo en cuenta el predominante papel de los metales como materiales estructurantes, es interesante tener en cuenta sus propiedades \u2026\u2026\u2026\u2026\u2026\u2026\u2026...","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567147,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Sin lugar a dudas los \u2026\u2026\u2026\u2026\u2026\u2026... son los materiales m\u00e1s vinculados a las construcciones mec\u00e1nicas y pueden dividirse en dos grupos: ferrosos y no ferrosos.","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567144,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"El \u2026\u2026\u2026\u2026\u2026\u2026\u2026.. es uno de los elementos m\u00e1s abundante de la corteza terrestre, y es el componente principal de la arena.","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567151,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"El vidrio llamado vidrio de ventana est\u00e1 compuesto, de un 72% de su peso de \u2026\u2026\u2026\u2026\u2026\u2026. (SiO2), y el resto de \u00f3xido de sodio (Na2O) y \u00f3xido de calcio (CaO)","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567149,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":" Las aleaciones de \u2026\u2026\u2026\u2026\u2026\u2026\u2026... se caracterizan por su baja densidad y su resistencia a la corrosi\u00f3n; ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567143,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"elementos que son m\u00e1s parecidos a metales, especialmente en cuanto a sus propiedades el\u00e9ctricas; los elementos de este grupo son semiconductores. Algunas veces se los cita como metaloides.","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567139,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"La expresi\u00f3n \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026. abarca las substancias no elaboradas obtenidas del subsuelo o producidas por la agricultura que son la base de los materiales que se utilizan en la producci\u00f3n de bienes o la provisi\u00f3n de servicios, ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567140,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"En funci\u00f3n de su origen, los \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026... se pueden clasificar en: de origen mineral, de origen vegetal y de origen animal. ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567152,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Los \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026.. pueden ser naturales (por ejemplo, las prote\u00ednas), u obtenidos artificialmente, por s\u00edntesis, ","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567141,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Los \u2026\u2026\u2026\u2026\u2026\u2026\u2026... son elementos qu\u00edmicos que presentan, en mayor o menor grado, caracter\u00edsticas como: buena conductividad el\u00e9ctrica y t\u00e9rmica, brillo, opacidad, dureza, fusibilidad, plasticidad, etc.","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null},{"id":567146,"quiz_id":"27761","answer_id":null,"answerType_id":"0","created_at":"2018-09-17 01:04:02","updated_at":"2018-09-17 01:04:02","questionName":"Desde una \u00f3ptica ingenieril, los materiales t\u00e9cnicos se pueden clasificar, seg\u00fan su estructura (\u2026\u2026\u2026\u2026\u2026\u2026\u2026... y\/o microsc\u00f3pica)","questionTimeSeconds":"30","questionTimeMinutes":"0","questionImagePath":null,"position":null,"explanation":null,"question_score_id":null,"lang":null,"questionAudioPath":null}]
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en función del peso, los metales se pueden subdividir en dos: grupos: metales ………………... y metales pesados

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