Question

what should maria do before she turns on the bunsen burner to begin the experiment? place the classroom fire extinguisher next to her lab bench. inspect the bunsen burner and gas tubing for damage. move her lab notebook and papers so they are away from the burner. remove her safety goggles so she can see the burner more clearly. retry

Explanation:

Before using a Bunsen burner, it is crucial to check for any damage to the burner and gas tubing. This ensures safety by preventing gas leaks or malfunctions. Placing the fire extinguisher next to the bench is not a standard pre - use step (it should be in a fixed location in the lab). Moving notebooks away is a good practice but is usually done after ensuring the equipment is safe. Removing safety goggles is unsafe as they protect the eyes during experiments.

Answer:

Inspect the Bunsen burner and gas tubing for damage.