Adapting modern poetry with chemical knowledge

(1) Beauty jewelry is full of waves in the sand, indicating that gold is separated from the sand and belongs to the separation of mixtures. It takes advantage of the chemical stability of gold and can exist in the form of simple substance, so it is related to the properties of gold. "Appreciating Zhang Xia" in Liu Changqing's Underwater Acoustic Ice Swallows and Snow Falls in the Sand Road refers to the three-state change of water. According to the molecules that make up plum blossoms, they are constantly moving and human.

(2) A. What it means is that the stone is exposed after the water falls, and no new substance is generated, which is a physical change; B, tempering into steel is to remove excess carbon from pig iron through chemical changes, which belongs to chemical changes; C. Obtaining gold from ore and producing new substances is a chemical change; D. Dropping water into ice means that water changes from liquid to solid, but the state has changed, which is a physical change; E. Dropping through a stone is a physical change in which the stone is washed out of the hole by dripping for a long time, and no new substance is generated; What F does is a change in shape, and no new substance is produced. This is a physical change.

So, the answer is: (1) gold; Water; Molecules are constantly moving; (2) BC.