Carbon Dioxide Solubility Demonstration – submitted by Flinn Scientific Canada

A candle and beaker of pink phenolphthalein solution are placed inside a jar. The candle is lit and the jar is capped. The flame expectedly goes out as the oxygen is depleted. After the flame is extinguished, the pink solution slowly fades to colourless. What has happened inside the jar?

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Flame-Retardant Balloon – Flinn Scientific Canada

Show students a “special” balloon that doesn’t pop when exposed to a flame. Students will come up with very clever ideas for why the balloon doesn’t pop. But, when all is said and done, the “magic” is the result of important scientific principles involving specific heat capacity and heat transfer. Continue reading

Microwave Light Bulb – SICK Science | Science Experiments | Steve Spangler Science

This interesting resource shows what happens when a light bulb is placed in a microwave oven.  Click on the source to get a video and Steve Spangler’s explanation of how this works.

Source: Microwave Light Bulb – SICK Science | Science Experiments | Steve Spangler Science

Coke versus Diet Coke Density Demo

This demonstration reviews the concept of density. It examines why certain objects float or sink in water and highlights some interesting information about cola versus diet cola soft drinks.

Click here to download the complete demo

This demo is part of the STAO demo collection.  Click here to check out all of them.