Ok so I have some science homework today but I don't have the textbook yet coz I'm new. And I need help with these questions... Which belongs to which category? 1) Beater 2) Filter Tunnel 3) Gauze mat 4) Test Tube 5) Conical Flask 6) Tripod 7) Measuring Cylinder 8) Watch glass 9) Round-bottom flask 10) Evaporating Burner 11) Spatulas 12) Test-tube brush 13) Test-tube holder 14) Tongs 15) Eye-dropper 16) Glass stirring rod 17) boss head 18) clamp 19) retort stand 20) heatproof mat 21) mortar 22) Pestle 23) Pipeclay Triangle 24) Test-tube rack Categories: A) Items for holding, mixing and heating B) Items for just heating C) Items for transferring chemicals D) Items for just holding E) Other