Often we find that different phases of pure substances can exist in equilibrium with one another. Let us consider an important gedankenexperiment (Latin-German for "thought experiment") in which we boil water. Ordinary water boiling is...

An inquiry lab where students try to separate as much as the pure substance they can in a set time period. This lab helps students understand that physical means can be used to take apart a mixture.

Given descriptions, scenarios, or illustrations of properties, students will distinguish between pure substances and mixtures.

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will define a mixture and understand why mixtures are different than pure substances. They will classify mixtures as homogeneous or...

This lesson focuses on different types of chemical substances, distinguishing between pure substances and mixtures, and changes of temperature based in substance. It provides a link to a test.

[Free Registration/Login may be required to access all resource tools.] In this online tutorial, students will begin to understand a substance according to its physical properties. Learn to distinguish between extensive and intensive...

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will use the oxidation number rules to determine the oxidation number of an atom of any element in a pure substance. They...

This hands-on activity will help the students have a better understanding of different types of materials as pure substances and mixtures and distinguishes the homogeneous and heterogeneous mixtures by discussing some material they use...

[Free Registration/Login may be required to access all resource tools.] Students will use the physical and chemical properties of matter to categorize the various forms of matter.

This Study Card stack enables students to review the concepts of matter, the kinds and classes of mater including atoms, molecules, elements, compounds, pure substance, and mixtures.

[Free Registration/Login may be required to access all resource tools.] Explores elements and their different properties, the history of elements, and how atoms relate to elements.

[Free Registration/Login may be required to access all resource tools.] Discusses elements and their different properties, the history of elements, and how atoms relate to elements.

A module reviewing over how vaporization occurs and its difference from evaporation. Also, review over the definition of boiling point. Module includes a video, pictures, explanation, and review questions.

A collection of video lectures from a course introducing students to the basics of thermodynamics. Webpage includes thirty-two lectures from a professor at an e-learning site. Lectures vary in length and cover topics like the laws of...

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 4 of 4 in the series titled "Elements."

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 1 of 4 in the series titled "Elements."

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 2 of 4 in the series titled "Elements."

[Free Registration/Login Required] Discover the composition of matter and the relationship between matter, atoms, and elements. Students will learn the differences between elements and compounds, and how molecules are formed. Chemical...

Learners discover that pure water does not conduct electricity and that dissolving different substances in water may or may not cause it to conduct electricity.