Seventh graders explore how exercise affects carbon dioxide levels in exhaled air.

Eleventh graders work together to complete a simulation on infectious diseases. They determine which concepts affect a disease more. They complete discussion questions as well.

Sixth graders experiment with mixtures. In this chemistry lesson, 6th graders determine which mixtures are considered heterogeneous, a suspension, a solution or a colloid. Students create a data sheet of what they discover.

Pupils experiment using the basic principles of gel filtration. They use the gel filtration technique for testing for the presence of specific substances. Students discover that starch is a larger molecule than glucose.

Textbook-style strong acid and base problems that can be checked using the Virtual Lab.

Textbook-style weak acid and base problems that can be checked using the Virtual Lab.

In this lab activity, students will learn how red cabbage can be used as an indicator of an acid or base by looking at its color changes.

In this chemistry lab activity, students will study acids/bases before learning how titration data is used to determine an unknown concentration. It is an investigation of the pH curve and an assessment of student's understanding of...

An simple experiment that will allow students to observe the effects of acids and bases on an egg and to then discuss what these observations tells us about larger issues, like acid rain.

A lab activity where students will neutralize and acidic solution with a base and a basic solution with an acid by using their knowledge of a red cabbage indicator. This site includes teacher and student instruction for the lab activity...

In this chemistry lab, students will investigate chemical changes that occur when acids and bases react. It is meant to introduce the concepts of chemical changes, gases have mass, conservation of mass, and balancing equations. Students...

As a chemist, you will learn to deal with complex mixtures of many compounds. In this interactive activity, you will learn the basis of separations using acid-base extraction. In the virtual lab you will simulate an actual experiment and...

Perform an experiment to determine the concentrations of a mixture of two acids.

Use the virtual lab to determine the pKa of a protein then create a buffer solution with a specific concentration ratio of the protein in its protonated/ unprotonated form.

Perform an experiment to determine the pKa and concentration of an unknown acid.

Perform an experiment to determine the pKa and concentration of an unknown weak base.

Students examine equilibrium and buffer solutions in a biological setting.

How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength...

This instructional activity will allow middle schoolers to perform pH tests that determine if various solutions are acids or bases (cognitive). Students will test common household solutions such as water, vinegar, milk, and orange juice...

Perform virtual lab experiments safely. Pour and mix specific amounts of various solutions on screen and observe changes in temperature and pH. Choose glassware and other tools (ie. bunsen burner, scale) to assist with virtual lab...

Perform virtual lab experiments safely. Pour and mix specific amounts of various solutions on screen and observe changes in temperature and pH. Choose glassware and other tools (ie. bunsen burner, scale) to assist with virtual lab...

In this virtual science lab, students learn how a pH scale works and how to calibrate a pH meter.

Perform a titration using an indicator to determine the concentration of an HCl solution.

Learn about acids and bases during this penny-polishing experiment. Students will hypothesize what substances will polish pennies and then test their hypothesis.