by STAO ADMIN | Nov 13, 2019
Chemists are constantly faced with the daunting task of counting large numbers of items, specifically atoms, ions, molecules and compounds. This task is made even more difficult by the fact that not all atoms of the same element are identical. In this...
by STAO ADMIN | Nov 13, 2019
This activity involves the surprising neutralization reactions between the carbonic acid that forms when the carbon dioxide in one’s breath reacts with water and calcium hydroxide.
by STAO ADMIN | Nov 13, 2019
This activity allows students to explore the composition of the candy Pop Rocks by observing the reactions that take place when Pop Rocks are placed in water.
by STAO ADMIN | Nov 13, 2019
This is a classic demonstration that illustrates the power of atmospheric pressure. A small amount of water is heated in a pop can. The can is inverted and submerged in ice-cold water. As a result, the pressure of the gas inside the can is quickly reduced dramatically...
by STAO ADMIN | Nov 13, 2019
This demonstration is a dramatic look at the influence of the atmospheric pressure and the relationship of pressure and temperature of a gas. A burning piece of paper is inserted in a bottle and an egg is set on top of the bottle. After the flame is extinguished the...
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