This lesson focuses on acids and alkalis including acidic and alkaline solutions, neutral solutions, indicators and the pH scale, the colors for litmus paper, and a link to a test.

This lesson focuses chemical reactions using acidic and alkaline solutions, the pH scale which measures the acidity or alkalinity of a solution, and how to use a pH meter. A link to an assessment is also provided.

[Free Registration/Login Required] Drag different characteristics of acids and bases to the correct location on the interactive table. After the activity, answer one challenge question to check for understanding.

[Free Registration/Login may be required to access all resource tools.] Solutions, acids, and bases are the focus of this lesson. The use of the pH scale to identify acids and bases is covered as well.

Bases are substances that can react with acids and neutralize them. Alkalis are bases that are soluble in water. The pH scale measures how acidic or alkaline a substance is. Substances with a pH lower than 7 are acidic, those with a pH...

A brief article defining "acid precipitation," followed by directions for a hands-on demonstration which "show[s] the direct effect of acid water on plant growth."