C12, Chemical Analysis. 5.0 / 5 based on 3 ratings ? ChemistryAnalysing substancesGCSEAQA Created by: cieran_10Created on: 21-09-18 23:23 97532148610 Across 1. What colour flame does a potassium ion produce? (5) 5. Why must you be careful when testing for chlorine gas? (2, 2, 2, 1, 5, 3) 6. What colour flame does a calcium ion produce? (6, 3) 10. How many spots will a pure substance form on a chromatogram? What about a mixture? (3, 4, 8, 5) Down 2. What colour flame does a sodium ion produce? (6) 3. What is the mobile phase of paper chromotography? (3, 7) 4. What colour flame does a lithium ion produce? (7) 7. In a formulation, why will each element have been chosen? (3, 1, 7, 7) 8. What colour flame does a copper ion produce? (5) 9. What is the stationary phase of paper chromatography? (3, 5)
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