by STAO ADMIN | Nov 12, 2019
This quick demonstration is a highly visual illustration of the use of acid-base indicators to determine pH. Milk of magnesia is mostly a suspension of magnesium hydroxide in water. Magnesium hydroxide is a strong base that readily neutralizes hydrochloric acid....
by STAO ADMIN | Nov 12, 2019
An astrolabe illustrates how the sky looks at any given time of day and throughout the year. This is accomplished by drawing the sky (star patterns) on the astrolabe with moveable parts to adjust for the date and time. The traditional sky map astrolabe allowed people...
by STAO ADMIN | Nov 12, 2019
The International Astronomical Union classifies solar system bodies into three categories: planets, dwarf planets, and small solar system bodies (including comets, asteroids, and meteoroids). There are eight planets in the solar system with two distinct groupings. The...
by STAO ADMIN | Nov 12, 2019
In this demo, a polyethylene rod is charged by rubbing with wool. The charged rod is then used to bend a stream of water flowing from a tap. Different substances have different attractions for electrons. When two materials are rubbed together, electrons will leave the...
by STAO ADMIN | Nov 12, 2019
This demonstration/activity involves the safe production of oxygen, hydrogen, and carbon dioxide gases, as well as the appropriate results for tests used to identify these gases.
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