by STAO ADMIN | Nov 14, 2019
The thermite reaction is very exciting, but also extremely dangerous. Iron has a melting point of over 1500C and the reaction can reach temperatures of over 2000C. This reaction was once used to weld railroad tracks together. This demonstration safely illustrate the...
by STAO ADMIN | Nov 14, 2019
This demonstration/activity introduces students to the concept of limiting reagent in a chemical reaction. Too often, students think that one can produce more product by using larger quantities of reactants. This demonstration/activity is specifically designed to...
by STAO ADMIN | Nov 14, 2019
The Doppler Effect, when applied to light from a star, can be used to determine if the star is approaching or receding. This is the basis for the generally accepted theory that the universe is expanding. This demonstration shows the Doppler Effect applied to sound....
by STAO ADMIN | Nov 14, 2019
This demonstration shows some differences between potable (drinkable) water and non-potable (non-drinkable) water. Variations in temperature, turbidity and pH level also determine the types of microorganisms that can thrive in each water sample. After the...
by STAO ADMIN | Nov 14, 2019
Food containers are common sources of waste. These materials can end up in landfill or be diverted by thinking of the 3 Rs: Reduce, Reuse, Recyle. Students will examine product packaging to assess packaging in terms of sustainability through the 3 Rs. Students work in...
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