232e","revisionId":"f2d25814-f0f5-4d6e-9b95-f0e3584ae0cd","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"fd3d5b7d-374b-4911-ac13-c8359882a2f3","label":null,"content":"Explain why solid potassium chloride cannot conduct electricity but solid aluminium can.","markscheme":"- States that potassium chloride has an ionic structure where ions are in fixed positions (or in a giant ionic lattice) and are not free to move B1\n- States that aluminium has metallic bonding / a giant metallic structure containing delocalised electrons B1\n- Explains that these delocalised electrons are free to move through the metal structure to carry electrical charge B1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"2f9e4868-248c-448b-9700-1863029c018d","revisionId":"bf0d4331-3d83-4316-833a-5e002dc08365","questionNumber":null,"questionType":"LA","specification":"Graphite is widely used as an electrode material in industrial electrolysis.","difficulty":4,"difficultyBand":"medium","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"4db68019-da48-4bdc-9ae1-657a344b469a","label":null,"content":"Explain, in terms of its structure and bonding, how graphite is able to conduct electricity.","markscheme":"- Each carbon atom is covalently bonded to three other carbon atoms, resulting in one delocalised electron per carbon atom. M1\n- These delocalised electrons are free to move throughout the layers/structure to carry the electrical charge. A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_chemistry","summaries":[{"id":"087154bd-8e91-49f5-85ee-3c2745b4025b","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"0a9b661d-7fc6-41d4-bb03-b0a51d1520dc","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"0f400ae8-3918-40ef-b858-4f7a0bb30494","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"0fbecd30-e4b7-4e2f-a7a9-2d2799dd64c8","difficultyBand":"medium","calculatorUse":null,"totalMarks":2},{"id":"13342f36-6b93-4f7c-aacf-bd0e75a575e9","difficultyBand":"hard","calculatorUse":null,"totalMarks":6},{"id":"197ebc98-a193-4cf0-a596-20520247232e","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"1fd2f5f3-3da4-4ad6-bc45-37fedd786147","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"2f9e4868-248c-448b-9700-1863029c018d","difficultyBand":"medium","calculatorUse":null,"totalMarks":2},{"id":"2fa07e88-42c4-4745-a0fd-75c31d5bc80d","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"3386a40f-b271-4fbb-be69-a2456b4195e3","difficultyBand":"medium","calculatorUse":null,"totalMarks":2},{"id":"36b6e848-7f9a-4244-988a-162119c54961","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"3e164924-e5bf-4554-a45e-e0d6c60bf9b3","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"40884bb2-f880-4d31-a643-9aa68c51be64","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"444cae92-3b02-4529-a7c8-18f55b39775b","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"4c8ee9ee-d050-42fb-8756-cf26cca7f175","difficultyBand":"medium","calculatorUse":null,"totalMarks":2},{"id":"4db7813d-76e0-462d-ae1f-b96bf15b7401","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"4ff1e746-c81f-4149-8128-719f2b905acc","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"518d2867-8cee-4575-94a1-0ceccb104a47","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"55079697-156c-4b97-8a88-6d11cbcf912c","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"566ad7fe-0480-4b65-8352-d3bcabb2bd07","difficultyBand":"medium","calculatorUse":null,"totalMarks":6},{"id":"58a3076a-1ee7-4cc2-9d

Types of substance

Question 3

Types of substance Questions

Types of substance

Question 3

Types of substance Questions