Question

which will ensure laboratory safety during the experiment? check all that apply. using beaker tongs to handle the hot beaker reading the thermometer accurately checking the beaker for chips prior to heating on the hot plate using a beaker instead of an erlenmeyer flask turning off the hot plate after use done

Explanation:

• Using beaker tongs to handle a hot beaker prevents burns.
• Checking the beaker for chips prior to heating avoids breakage during heating.
• Turning off the hot - plate after use prevents fire or over - heating hazards. Reading the thermometer accurately is about measurement accuracy, not safety. Using a beaker instead of an Erlenmeyer flask is a choice of equipment for the experiment, not a safety measure.

Answer:

• using beaker tongs to handle the hot beaker
• checking the beaker for chips prior to heating on the hot plate
• turning off the hot plate after use