Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present. This is statement is false.
Each water molecule has the ability to create four hydrogen bonds: two between its hydrogen atoms and the hydrogen atoms of its neighbors, plus two more. In natural ice, these quartet hydrogen bonds form an ideal tetrahedral arrangement around individual water molecules.
The most crucial lab safety rule would be to be aware of where safety gear, like a fire extinguisher, is located and how to use it. Despite all safety measures, there is always a potential of an accident in a lab.
Therefore, Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present. This is statement is false.
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