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Watch these videos, which discuss acids, bases, and the pH scale. Consider examples of substances with low, neutral, and high pH levels. Also, recognize the differences between strong and weak in terms of acidity and basicity.
Source: Wendy Riggs, https://youtu.be/K8oapcrzj9I, https://youtu.be/2ZDTcZcG5I4 This work is licensed under a Creative Commons Attribution 3.0 License.