4. Where is the end of the wire placed when performing a flame test? 5. Which element occurs as an imparity and gives a weak yellow flame teat? 6. Which three halides are imvestigated in this experimen? 7. Is water and hexane miscible or immiseible? 8. Is the halide test observed in the upper layer or lower fange? 9. Refer to Figare 7.3 to answer the following- (a) Which halide is indicated by an anange upper hexane layert. (b) Which halide is indicated by a chor upper hexane layer? (c) Which halide is indicated by a parple upper hexane layer? 10. What safety procautions sbould be observed in this experiment