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English
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Batteries have some significant shortcomings: they deliver limited power, cannot recharge quickly, and have a limited lifespan. So how do we make them better? In this video clip, hear from experts working on creating better portable energy sources for our increasingly power-hungry and fast-paced lives.
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A young reader's introduction to where cars came from and how they work. Presented in comic book format.
"In Dan Zettwoch's Science Comics: Cars, you'll learn where cars came from and how they work. When you pop the hood, what are you looking at? How does gasoline - or electric batteries, or even steam - make a car move? Rev up your motor and take look at the combustible history of the automobile and its explosive effects on our modern lives."--Provided...
10) Acids and bases
Language
English
Description
Use this video to familiarize students with the properties of acids and bases. Beginning with an overview of how these two kinds of chemicals react to or neutralize each other, the program explores Arrhenius's ideas on ion release and Lowry and Bronsted's theory of proton exchange. Details on the pH scale, indicators, conjugate bases, and Lowry-Bronsted reactions are featured along with numerous examples of acid and base applications-cleaning agents,...