{"type":"multi-choice","id":"76016","dataJson":{"key":0,"prompt":"What is meant when we talk of “Diffusion”?","options":[{"key":"0.8536308942821313","label":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration.","value":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration."},{"key":"0.9414182072437545","label":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy.","value":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy."},{"key":"0.8825667878175332","label":"The amount of a substance present in a given volume or weight of a mixture or solution.","value":"The amount of a substance present in a given volume or weight of a mixture or solution."},{"key":"0.29794871764712916","label":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. ","value":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. "},{"key":"0.6160855604046095","label":"When the substance cannot be dissolved in a solvent","value":"When the substance cannot be dissolved in a solvent"}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process by which particles or substances spread from areas of higher concentration to areas of lower concentration."]}}

{"type":"multi-choice","id":"76017","dataJson":{"key":1,"prompt":"Describe the term \"random movement”.","options":[{"key":"0.44063800592452107","label":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration.","value":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration."},{"key":"0.3435120783002392","label":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy.","value":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy."},{"key":"0.8705620349935915","label":"The amount of a substance present in a given volume or weight of a mixture or solution.","value":"The amount of a substance present in a given volume or weight of a mixture or solution."},{"key":"0.750797037961165","label":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. ","value":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. "},{"key":"0.5494951565455416","label":"When the substance cannot be dissolved in a solvent","value":"When the substance cannot be dissolved in a solvent"}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The spontaneous and unpredictable movement of particles or objects that results from their thermal energy."]}}

{"type":"multi-choice","id":"76018","dataJson":{"key":2,"prompt":"What is meant by the term \"concentration\"?","options":[{"key":"0.4490771735212836","label":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration.","value":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration."},{"key":"0.5729295993781454","label":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy.","value":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy."},{"key":"0.04005492423105195","label":"The amount of a substance present in a given volume or weight of a mixture or solution.","value":"The amount of a substance present in a given volume or weight of a mixture or solution."},{"key":"0.5965964097331605","label":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. ","value":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. "},{"key":"0.39204548308294906","label":"When the substance cannot be dissolved in a solvent","value":"When the substance cannot be dissolved in a solvent"}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The amount of a substance present in a given volume or weight of a mixture or solution."]}}

{"type":"multi-choice","id":"76019","dataJson":{"key":3,"prompt":"How would you describe the term \"concentration gradient\"?","options":[{"key":"0.3836961026671867","label":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration.","value":"The process by which particles or substances spread from areas of higher concentration to areas of lower concentration."},{"key":"0.8194024722260146","label":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy.","value":"The spontaneous and unpredictable movement of particles or objects that results from their thermal energy."},{"key":"0.46408712559706666","label":"The amount of a substance present in a given volume or weight of a mixture or solution.","value":"The amount of a substance present in a given volume or weight of a mixture or solution."},{"key":"0.5308798456082396","label":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. ","value":"The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. "},{"key":"0.9481449602996074","label":"When the substance cannot be dissolved in a solvent.","value":"When the substance cannot be dissolved in a solvent."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The difference in concentration between a region with a high concentration of particles and a region with a lower concentration of particles. "]}}

{"type":"multi-choice","id":"76020","dataJson":{"key":4,"prompt":"Which one of the following is related to diffusion?","options":[{"key":"0.30458530011079554","label":"Freezing of a solution","value":"Freezing of a solution"},{"key":"0.4123083083809804","label":"Boiling of water.","value":"Boiling of water."},{"key":"0.5668359743019833","label":"The smell of coffee from the kitchen.","value":"The smell of coffee from the kitchen."},{"key":"0.15492248543681453","label":"The floating of wood shavings on water.","value":"The floating of wood shavings on water."},{"key":"0.24954799407695671","label":"The barking of a dog.","value":"The barking of a dog."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The smell of coffee from the kitchen."]}}

{"type":"multi-choice","id":"76021","dataJson":{"key":5,"prompt":"How does heat increase diffusion?","options":[{"key":"0.7710155321916302","label":"At a higher temperature, molecules have a higher energy and spread out faster.","value":"At a higher temperature, molecules have a higher energy and spread out faster."},{"key":"0.595350537837519","label":"At a higher temperature, molecules have a lower energy and spread out faster.","value":"At a higher temperature, molecules have a lower energy and spread out faster."},{"key":"0.9771973544609137","label":"At a higher temperature, molecules have a higher energy and spread out slower.","value":"At a higher temperature, molecules have a higher energy and spread out slower."},{"key":"0.41621149249788325","label":"At a lower temperature, molecules have a lower energy and spread out faster.","value":"At a lower temperature, molecules have a lower energy and spread out faster."},{"key":"0.881556070109134","label":"At a higher temperature, molecules have a lower energy and spread out slower.","value":"At a higher temperature, molecules have a lower energy and spread out slower."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["At a higher temperature, molecules have a higher energy and spread out faster."]}}

Answer incorrect

Look at the slide below to work out the answer.