Sophia Learning
Sophia: The Properties of Water: Lesson 3
This lesson will provide an understanding of the chemical and physical nature of water. It is 3 of 4 in the series titled "The Properties of Water."
Sophia Learning
Sophia: The Properties of Water: Lesson 4
This lesson will provide an understanding of the chemical and physical nature of water. It is 4 of 4 in the series titled "The Properties of Water."
American Chemical Society
Middle School Chemistry: Surface Tension
Explore the chemical properties involved in surface tension.
US Geological Survey
Usgs: Arsenic in Ground Water in the United States
This page discusses the presence of arsenic (chemical symbol As) in ground water in the United States. Also provides many links to other sites about arsenic (especially in drinking water.)