# Acids, Alkalis & pH

Define acids and alkalis in terms of hydrogen ion concentration, describe the pH scale (0–14), and explain how indicators are used to identify and measure acidity or alkalinity

Builds on: Coral Bleaching & Acidification (soft, https://ai.page/c/coral-bleaching-and-acidification/en.md), Atoms, Elements & Compounds (soft, https://ai.page/c/atoms-elements-and-compounds/en.md)

Concept id: acids-alkalis-and-ph. Subject: science. Licence: CC BY-SA 4.0.

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