Which flask is used to heat and store liquids with a bottom wider than the top to heat quicker because of greater surface area?

• A. Florence Flask
• B. Erlenmeyer Flask
• C. Beaker
• D. Bottle

Answer: (B)

The shape matters because heat transfer depends on the surface area contacting the heat source. An Erlenmeyer flask has a broad bottom and a narrow neck, giving more bottom surface area to absorb heat while keeping the opening small. That larger base area makes heating the liquid faster on a hot plate. The narrow neck also helps reduce splashing and limits evaporation when you swirl or boil, which is handy for heating and storing liquids. In contrast, a Florence flask has a rounder body with a long, narrow neck and less broad base, so heating isn’t as rapid; a beaker has straight sides and a wide mouth that can lead to more evaporation and splashing; a bottle isn’t designed for routine heating in lab work.