Classic QUALITATIVE activities for elementary science teachers
providing supporting evidence of small particle nature of matter
include observing:
- drops of food colouring dissolve in hot and cold water in large
beakers or fish tanks
- opening a bottle of perfume near the door of a large room; have
students scatter throughout room and raise hands as they smell the
perfume
- watch sugar cubes and ice cubes dissolve in water (who says watching
stuff melt is boring :^)
- cold metal spoon held over the spout of a teakettle; also watch fog
form on cold mirror in bathroom while someone else showers (or in hall
after bathroom door is opened)
- ice melting in sealed baggie on digital balance; repeat same with
chunks of dry ice (solid CO2). Watch scale reading till baggie pops
seal for CO2.
If anyone has more I'd love to hear of them, please. Dan M
Dan MacIsaac, Associate Professor of Physics, SUNY-Buffalo State College
222SciBldg BSC, 1300 Elmwood Ave , Buffalo NY 14222 USA 716-878-3802
<macisadl@buffalostate.edu> <http://PhysicsEd.BuffaloState.edu>
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