Acids, Bases, and pH Scale Activity
A colorful worksheet using litmus paper tests and a pH scale. Students classify common substances as acidic, basic, or neutral, and explain how indicators change color based on hydrogen ion concentration.
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This asset is part of 7th Grade Science Worksheets That Actually Teach (Free PDF) published by SheetForge. Licensed under CC BY 4.0 — Free for personal use. Free to use with attribution.