Which particles are finely divided solids resulting from crushing, grinding, or
Which part of the body, with its thick layers of cells and its secretions, is almost
impervious to chemical agents? However, certain chemicals, such as solvents
and gases, can penetrate this barrier.
a. The skin.
b. Excretory system.
For all practical purposes, mists and vapors are the same.
Which potential chemical hazard is most likely to be formed during the heating of