Question

A sample of solid iodine is placed in a tube and the tube is sealed after all of the air is removed. The mass of the 6. tube and the solid iodine together is 27.0 grams. The tube is then heated until all of the iodine undergoes sublimation. Iodine soid This test tube shows what the initial solid iodine sample looks like on a molecular level. а. **Draw what the iodine sample would look like (on a molecular level) after sublimation: [1pt] b. Sublimation is an example of a (circle answer): [0.5pt] Nuclear Change Chemical Change Physical Change Sublimation is an (circle answer): [0.5pt] c. Isothermic process Exothermic process Endothermic process Write a balanced equation for the sublimation of iodine. Show all states of matter AND include heat in d. the equation. [1.5pt] When the sublimation of iodine occurs, what must be broken? (circle ALL TRUE statements): [1pt] e Dipole-Dipole forces London dispersion forces lonic bonds Covalent bonds The mass of the tube and iodine after sublimation will be (circle answer): [0.5pt] f. Less than 27.0 grams Equal to 27.0 grams More than 27.0 grams The volume of the iodine in the tube after sublimation will be (circle answer): [0.5pt] g. Less than before The same as before More than before h. The density of the iodine in the tube after sublimation will be (circle answer): [0.5pt] The same as before More than before Less than before

Answer 1

oo даята захаил Та маш b. c. Its a physical change It requires healing i:e, it is an endothermic process e. Iz (s) + heat Ź Iz (9) No covalent or ionic bands are broken here, only the faces holding the solid together i.e, London dispersion farce and dipole - dipole faces are frollen. The mass won't change volume will definately increase as gases ocupy more volume solid is obviously more dense than gases. so, less than before f. 8. .