Give any evidence to prove that the heated mass of iron and sulphur is no longer a mixture but a compound.
Answers
Answer:
Iron and sulfur reaction
Demonstration and class practical
This demonstration or class experiment shows the exothermic reaction of two elements, iron and sulfur, to form the compound, iron sulfide. The two solids are mixed and heated in a test-tube (or ignition tube). The reaction can be used to illustrate elements, mixtures and compounds.
Explanation:
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Type of Activity:demonstration, class practicalAudience:TeacherAge Group:11 to 16 yearsSubjects:Practical chemistryExpositionMixturesSeparation of mixturesChemical change/reactionsReactions involving metalsRedoxCredits : This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. Nuffield Foundation iron-and-sulfur-reaction
Iron and sulfur reaction
Experiment
Exciting elements video containing the iron and sulfur reaction
Video
Duration : 00:14:12 time (hh:mm:ss)
Exciting elements video containing the iron and sulfur reaction (download)
Video
Duration : 00:14:12 time (hh:mm:ss)
Click here to see full screen of experiment Click here to see full screen of experiment
Iron and sulfur reaction
Demonstration and class practical
This demonstration or class experiment shows the exothermic reaction of two elements, iron and sulfur, to form the compound, iron sulfide. The two solids are mixed and heated in a test-tube (or ignition tube). The reaction can be used to illustrate elements, mixtures and compounds.
Lesson organisation
This reaction can be carried out as a demonstration or class experiment in a well-ventilated laboratory provided that the instructions provided here are strictly adhered to.
The reaction can be carried out in borosilicate glass test-tubes as a demonstration or in smaller (ignition) tubes by students. The reaction provides an opportunity to show that the properties of a compound are different from its constituent elements.
The reaction must not be carried out on tin lids in the open laboratory as is suggested in some sources. The sulfur may boil or burn releasing sulfur dioxide which is a TOXIC and CORROSIVE gas and may trigger an asthmatic attack.