When liquid gold becomes a solid, its particles get closer together. which best describes what happened to the gold? the conservation of magnetism the change in solubility in a physical change the change in melting point in a physical change the rearrangement of particles in a physical change

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.