Question

select all steps below that ensure laboratory safety during the experiment you carried out. using test tube tongs to handle the hot test tubes reading the graduated pipette accurately checking the beaker for chips prior to heating on the hot plate turning off the hot plate after use

Explanation:

Using test - tube tongs for hot test tubes prevents burns. Checking beaker for chips before heating avoids breakage due to uneven heating. Turning off the hot plate after use prevents fire or overheating hazards. Reading the pipette accurately is about measurement accuracy, not safety.

Answer:

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