1. lead has a specific hat of 0.031 cal/gram deg. C. How many calories does it take to raise the temp. of 200 g of lead from 50 deg C to 80 deg C?
2. Using the words below approp. explain in significant detail how ice melts, water expands, and finally boils when placed in a pan on a hot stove. (heat energy, temperature, molecular motion, kinetic energy, heat transfer.)