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Ok, some quick questions :
1) In the graph questions, when the say lable each graph, do we write the label names IN the graph grid or outside it??
2) In electrolysis, do we make some substances (e.g Al2O3), molten because they are insoluble in water?, Or is there another reason?
3) For electrlysis of Aluminium Oxide, do we dissolve the Al2O3 in the MOLTEN cryolite, or do we mix Al203 with cryolite and then melt the mixture together?
4) Is is true that impurites LOWER the melting point of a substance, and RAISE the boiling point of it?
Thank you in advance!
1) In the graph questions, when the say lable each graph, do we write the label names IN the graph grid or outside it??
2) In electrolysis, do we make some substances (e.g Al2O3), molten because they are insoluble in water?, Or is there another reason?
3) For electrlysis of Aluminium Oxide, do we dissolve the Al2O3 in the MOLTEN cryolite, or do we mix Al203 with cryolite and then melt the mixture together?
4) Is is true that impurites LOWER the melting point of a substance, and RAISE the boiling point of it?
Thank you in advance!