chemistry experiments for children

(lily) #1

sired angle. If you want aparticularangle or special shape, draw it first on paper.
When the glass is ready for bending, hold it an inch above thepaperand follow


your drawing like apattern.CAUTION:Remember the glass is very hot and may
cause the paper to smolder if it touches it.

How to StretchGlass. Do not use the fishtail tip on the burner. Hold the
glass and roll it in the flame withbothhands. When the bright orange color
appears,push the ends of the tube together sothatthe wallsofthe tube become a
little thicker. Remove the glass from the flame and pull the ends of the tube

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apart.Tryto keep your hands and the tube in astraightline. To make a nozzle
or adropper,cut the glass to the length you want and fire-polish each tip.

How to Handle Powdered Chemicals and Crystals.If the stopperis hollow,
turn the bottle on its side androtateit with one hand until some of thecontents
are inside the stopper. Remove thestopperin such amannerthatthe chemical
remains in it, but none falls from themouthofthe bottle. Gently tap thestopper
with your index finger until the correctamounthas fallen out. Replace the
stopper.
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