Chemistry glassware comes in all shapes, sizes and thickness. You have your test tube, boiling tube, canonical flask, round-bottom flask, florence flask, and 25 more.
What are the differences and why do you need them? Andy Brunning of Compound Interest created this handy visual guide to chemistry laboratory glassware. On his site, he explains in detail the differences between basic glassware, flasks, funnels, condensers, and measuring apparatuses.
Source: Compound Interest