Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
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Who Developed the Periodic Table of Elements? The periodic table of elements was designed independently about the same time by two different scientists. Credit is given to Dmitri Mendeleev, a professor of chemistry in St. Petersburg, Russia because he published the first version of the table in 1869. Julius Lothar Meyer (1830-1895), a chemistry professor [...]
What is Matter? Matter is anything that has mass and takes up space, such as water. The photo shows water first falling and filling and collecting at the bottom of the waterfall. When the collected water increases in volume, the water spills over a rock boundary. Water takes up space. Volume is the amount of [...]
What Happens When A Substance Gains or Loses Energy? For this article, heat will be the energy source and water molecules the substance gaining or losing energy. So, what happens when water molecules gain or lose energy? Energy is needed for motion, the more energy a substance has the faster is its motion. [...]
How Does Water Move Through Paper? Paper is made of plant fibers. In the process of making paper, the fibers overlap forming a massive network of tunnels in all directions throughout the paper. The chemical molecules making up the fibers are attractive to water water molecules. Adhesion is the name of the force of [...]
Why All Americans Need a Better Understanding of Chemistry I have cut a section from an article about what is being touted as a very dangerous chemical. The name of this life threatening chemical is DHMO, dihydroxymonoxide. What is DHMO? DHMO IS WATER! DHMO or dihydroxymonoxide’s chemical formula has two hydrogens (di-hydrogen) and one [...]
The video demonstrating how to make a bottle of dynamic colored diving bubbles. Dynamic: Something that is dynamic is in perpetual change, or motion, or progressing, etc.. The colored water bubbles form when drops of food coloring are added to a bottle containing oil and water. Liquid food coloring is a mixture of a colorant [...]
Chemistry Facts: Hydrates are chemicals that have water as part of their structure. If these chemical lose some or all of this water they change in appearance. Cobalt Chloride is an example of a chemical hydrate. When cobalt chloride is hydrated (having water) its color is pink. When cobalt chloride is dehydrated (loses water) its [...]
Sugars are organic compounds. But there are some inorganic compounds that are sweet, including beryllium chloride and lead acetate. The latter may have contributed to lead poisoning among the ancient Roman aristocracy: the Roman delicacy defrutun was prepared by boiling soured wine (containing acetic acid) in lead pots. Neither bronze nor copper kettles were used [...]
ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years.
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