After several seconds the flames are extinguished and the towel appears unharmed by the fire. Using crucible tongs, dip a lab towel into a beaker containing a 50/50 mixture of isopropyl alcohol and ...

Pour 5mm of acetone in a 250mL beaker. Grasp the nichrome wire 8" - 10" above the penny and hold the penny in the flame of a Bunsen burner or torch flame until it is red hot. Position the wire so that ...

This very early predynastic beaker is a key ... is heated on an open fire to bring out the red colour. The black top is formed by turning the pot up directly onto the flames and increasing the ...