Question

Select all steps below that you followed to practice laboratory safety during the tongs or a test tube holder to hold materials over the bunsen burner flame wore gloves and goggles made careful observations of the products and reactants did not smell the gases produced?

1) Used tongs or a test tube holder to hold materials over the bunsen burner flame
2) Wore gloves and goggles
3) Made careful observations of the products and reactants
4) Did not smell the gases produced

Answer 1

In laboratory safety practices, tongs or a test tube holder were used to hold materials, protective gloves and goggles were worn, careful observations were made, and gases were not smelled directly. Additional precautions included good ventilation, careful handling of flames, and cleanliness.

Step-by-step explanation:

To practice laboratory safety, the following steps were followed:

1. Used tongs or a test tube holder to hold materials over the Bunsen burner flame.
2. Wore gloves and goggles for protective measures against chemical splashes and heat.
3. Made careful observations of the products and reactants, noting down any changes.
4. Did not smell the gases produced directly; instead used the hand to gently waft the vapors towards the nose if necessary.

Additional safety precautions include ensuring a well-ventilated room, never leaving Bunsen burners and flames unattended, not eating or drinking in the lab, cleaning all materials thoroughly, and being mindful of flammable substances and personal attire while working with open flames.