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.
There are many classifications that can be used to group industrial hazards. Iâ¦ will just give a few examples of these hazards 1. chemical hazards: solids such as heavy metals i.e lead and asbestos, liquids such as acids and gases such benzene and sulphur (IV) oxide 2.