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Doing experiments with the pH scale require you to have pH paper and a few other basic items. Do experiments with the pH scale with help from an experienced high school educator in this free video clip.
Expert: James Lincoln
Contact: www.physicsvideos.net/
Bio: James Lincoln is a UCLA physicist, a high school educator, and appears in many physics and science videos. He has a master’s degree in physics and a master’s degree in education.
Filmmaker: Dustin Kuepper
Series Description: Science knowledge doesn’t just stop being important the moment we leave the classroom. Learn how to further your knowledge of physics, chemistry, biology and more, right at home, with help from an experienced high school educator in this free video series.
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I like your videos, but this is definitely a teachable moment for others. Since you are using a strong acid, please follow your own advice with the PPE gear!
the salt water is neutral because the Na+ ion and the Cl- ion from the salt are conjugates of strong acids/bases (respectively) and can therefore not re-react to form their respective acids and bases. this prevents it from producing the H+ and OH- ions that make it acidic or basic. Water is actually an acid and a base, not "not an acid nor a base" it produces both the H+ and OH- ions, so it therefore creates both a base and an acid.