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

Answer 1

Select all that apply:

- using beaker tongs to handle the hot beaker — Yes. (Prevents burns from touching hot glass.)
- reading the thermometer accurately — Yes. (Knowing the correct temperature prevents overheating or unsafe conditions.)
- checking the beaker for chips prior to heating on the hot plate — Yes. (Chipped glass can crack or shatter when heated.)
- using a beaker instead of an Erlenmeyer flask — No. (Choice of glassware depends on the procedure; a beaker is not inherently safer and in some cases a flask is safer.)
- turning off the hot plate after use — Yes. (Prevents burns, fire hazards, and conserves energy.)