(a) iron has a bcc crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/mol. compute and compare its theoretical density with the experimental value found inside the front cover. (b) explain why the theoretical density is different than the experimental density as shown in part (a).

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it