When handling equipment that in itself is not dangerous, one should be careful. Tongs used to lift hot beakers should be squeezed while around the middle of the beaker, and held carefully until the beaker is in contact with the surface it s being set upon. Tongs for lifting hot test tubes work in the opposite way. They must be squeezed to open, then let go to close around the test tube. Be careful not to squeeze these while carrying a hot test tube.
Chemistry is a fun subject that people as young as ten want to get involved in.
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