Suspension and Emulsions

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0 [{"id":462366,"quiz_id":"23755","answer_id":null,"answerType_id":"2","created_at":"2018-05-14 22:59:21","updated_at":"2018-05-14 23:24:12","questionName":"Match the terms of the emulsion instabilities with their definitions:","questionTimeSeconds":"0","questionTimeMinutes":"8","questionImagePath":null,"position":16,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462360,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:32:22","updated_at":"2018-05-14 23:24:12","questionName":"Sedimentation behaviour of coagulated suspension includes: ","questionTimeSeconds":"0","questionTimeMinutes":"7","questionImagePath":null,"position":10,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462359,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:32:10","updated_at":"2018-05-14 23:24:11","questionName":"Sedimentation behaviour of Flocculated suspension includes: ","questionTimeSeconds":"0","questionTimeMinutes":"7","questionImagePath":null,"position":9,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462346,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:21:10","updated_at":"2018-05-14 23:24:10","questionName":"A 50ml suspension which forms a sediment of 10cm3 will have a sedimentation volume of:","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":4,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462339,"quiz_id":"23755","answer_id":null,"answerType_id":"2","created_at":"2018-05-14 22:16:37","updated_at":"2018-05-15 04:37:58","questionName":"Regarding Stoke's law of the velocity of sedimentation, match the symbols with their meaning:","questionTimeSeconds":"0","questionTimeMinutes":"10","questionImagePath":"uploads\/suspension-and-emulsions\/image.png","position":2,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462351,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:24:33","updated_at":"2018-05-14 23:24:11","questionName":"Flocculation is... ","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":6,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462353,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:25:25","updated_at":"2018-05-14 23:24:11","questionName":"Caking of suspension if formed with...","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":7,"explanation":"Caking is permanent -> coagulation ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462364,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:52:55","updated_at":"2018-05-14 23:24:12","questionName":"Interfacial tension is","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":14,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462342,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:19:23","updated_at":"2018-05-14 23:24:10","questionName":"Suspensions are assessed using a \u201csedimentation volume\u201d (F) which can be calculated by taking into consideration the final (Vf) volume of sediment and initial (Vo) volume of the suspension before settling using the equation:","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":3,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462361,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:42:41","updated_at":"2018-05-14 23:24:12","questionName":"Suspensions can be stabilised by:","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":11,"explanation":"Accords the Stoke's equation, increasing viscosity (\u03b7) will reduce sedimentation velocity (will sediment slower).\r\n> polymers increases viscosity \r\n> shear-thinning decreases therefore will not stablise suspension \r\n>surfactants will reduce aggregation (clumping) therefore will make suspension more stable \r\n> adding salt will reduce zeta potential meaning less repulsion and more likely to aggregate \r\n","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462357,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:27:16","updated_at":"2018-05-14 23:24:11","questionName":"Deflocculated means","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":8,"explanation":"Deflocculation is when Suspensions that do not flocculate but coagulates instead -> deflocculation therefore means coagulation ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462365,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:54:45","updated_at":"2018-05-14 23:24:12","questionName":"Which is not an emulsion instability?","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":15,"explanation":"Coagulation is involved in suspensions and colloids only ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462363,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:51:11","updated_at":"2018-05-14 23:24:12","questionName":"What are the advantages of emulsions ","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":13,"explanation":"All wrong answers are disadvantages as opposite","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462348,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:23:07","updated_at":"2018-05-14 23:24:11","questionName":"Coagulation is...","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":5,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462362,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:44:47","updated_at":"2018-05-14 23:24:12","questionName":"An emulsion is..","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":12,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null}]
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Match the terms of the emulsion instabilities with their definitions:

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Match the text

Coalescence

Flocculation

Creaming

Breaking/cracking

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The separation of an emulsion into two phases as a way to reduce surface area to volume ratio

When emulsion droplets come into contact with each other and combine and grow in size, resulting in different sized emulsion droplets in the solution

Loose adherance of emulsion droplets that do not absorb another and grow in size

When denser phase sinks at the bottom


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