1. Suppose you were given a sample of iodine crystals, a sample ofantimony, and a sample of mixture of iodine and antimony that hadbeen ground together to form a fine powder of uniformconsistency. look up the physical and chemical properties ofboth iodine and antimony. then list the properties of eachelement that you believe would be useful in separating andrecovering them from the mixture. on the basis of theseproperties, devise a procedure to separate the two elements fromthe mixture and recover the separate element.

2. Suppose you heat three solids in open vessels and then allowthem to cool. tje first gaims mass, the second loses mass,and the mass of the third remains unchanged. how can youreconcile these facts with the generalization that in a chemicalreaction the total mass of the reating materials is equal to thetotal mass if the products?

4. An ice cube melts at room temperature and water freezes attemperature of 0 degree cel. and below. from thesefacts, what can you infer concerning the relationship between the temperature of a system and the influence of the entropy factor on the change that the system undergoes?