Chemistry 1LD Practice Test

Permeation refers to the movement of a chemical through a protective glove material from the outside to the inside, as the molecules diffuse and traverse the glove rather than just causing visible wear. This definition focuses on the glove acting as a barrier and the chemical getting through it, which is exactly what the option describes—the chemical’s ability to pass through the glove. The other ideas describe different issues: degrading the glove material (chemical attack on the glove), the time until the chemical first appears on the inside surface (breakthrough time, a related measurement but not the definition), and skin exposure from the chemical that has bypassed the glove, not movement through it. So the option that states the chemical’s ability to pass through the glove best captures what permeation means.