Graphology - the study of handwritings; autograph - written with one's own hand; seismograph - a machine noting strength and duration of earthquakes. marina - a harbor for pleasure boats; maritime - relating to the sea; submarine - an undersea boat; aquamarine - color of sea water.
Chemicals are classified into various hazard classifications in accordance with their physiochemical properties and health hazards. Each class of chemical has a pictorial symbol called a danger symbol.
Chemical Hazards. Identifying the Chemical Hazards. The hazard associated with a chemical depends on: what the specific chemical is. what chemical(s) it is mixed with, if any, and. the relative proportion of the chemical, if it is in a mixture or solution.