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 affect pH. Can a weak acid solution have the same pH as a strong acid solution?

This course's aims are two-fold: 1) to offer students the theoretical and practical tools to understand how and why cities become torn by ethnic, religious, racial, nationalist, and/or other forms of identity that end up leading to conflict, violence, inequality, and social injustice; and 2) to use this knowledge and insight in the search for solutions. As preparation, students will be required to become familiar with social and political theories of the city and the nation and their relationship to each other. They also will focus on the ways that racial, ethnic, religious, nationalist or other identities grow and manifest themselves in cities or other territorial levels of determination (including the regional or transnational). In the search for remedies, students will be encouraged to consider a variety of policymaking or design points of entry, ranging from the political- institutional (e.g. forms of democratic participation and citizenship) to spatial, infrastructural, and technological interventions.

In this interactive activity adapted from Iowa State University, design and carry out an experiment: dissolve salts in water, see how different ionic compounds produce different reactions, and observe the resulting changes in temperature.

This course looks at all forms that energy exists. It explains how energy is used in: transport, agriculture, industry, commerce and households. It describes how energy is stored using storage systems such as: battery, flywheels, compressed air, chemical energy systems and pumped storage. This course explains the problem of depletion of energy resources. It describes the environmental damage associated with the use of fossil fuels, acid rains, dangers posed by leaded fuels, oil spills, gas leaks and explosions, water pollution caused by poorly managed coal mines, and air pollution. It describes the environmental damage associated with the use of fuelwood, uranium, hydro-power plants and wind. It also explains possible solutions to the energy-related problems.

Students gain an understanding of the difference between electrical conductors and insulators, and experience recognizing a conductor by its material properties. In a hands-on activity, students build a conductivity tester to determine whether different objects are conductors or insulators. In another activity, students use their understanding of electrical properties to choose appropriate materials to design and build their own basic circuit switch.

This module describes the requirements for completing the exercises included in the LabVIEW Graphical Programming Course. It also contains the code necessary for completing the exercises.

Laws of thermodynamics: general formulation and applications to mechanical, electromagnetic and electrochemical systems, solutions, and phase diagrams. Computation of phase diagrams. Statistical thermodynamics and relation between microscopic and macroscopic properties, including ensembles, gases, crystal lattices, phase transitions. Applications to phase stability and properties of mixtures. Computational modeling. Interfaces.

You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: dilution problems, Sucrose problem, Making Solutions from Solids, Metal Density problem, Liquid Density problem, Alcohol Density problem.

This workshop is designed to introduce students to different perspectives on international politics in the 21st century. Students will explore how advances in information technology are changing international relations and global governance through opening new channels of communication, creating new methods of education, and new potentials for democratization. We will consider the positive and negative externalities associated with applications of such technologies. Students will be encouraged to look at alternative futures, and/or to frame solutions to problems that they define. The class will include guest lectures, discussions, and a final project and presentation.

In this course, the student will learn about the three laws of thermodynamics, thermodynamic principles, ideal and real gases, phases of matter, equations of state, and state changes. The student will also take a look at chemical kinetics--a branch of study concerned with the rates of reactions and other processes--as well as kinetic molecular theory and statistical mechanics, which relate the atomic-level motion of a large number of particles to the average thermodynamic behavior of the system as a whole. Upon successful completion of this course, the student will be able to: State and use laws of thermodynamics; Perform calculations with ideal and real gases; Design practical engines by using thermodynamic cycles; Predict chemical equilibrium and spontaneity of reactions by using thermodynamic principles; Describe the thermodynamic properties of ideal and real solutions; Define the phases of matter, describe phase changes, and interpret/construct phase diagrams; Relate macroscopic thermodynamic properties to microscopic states by using the principles of statistical thermodynamics; Describe reaction rates and then do calculations to determine them; Relate reaction kinetics to potential reaction mechanism; Calculate the temperature dependence of rate constants and relate that to activation energy; Describe a variety of complex reactions; Describe catalysis; Describe enzymatic catalysis. (Chemistry 105)

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values.

Amy Smith is an engineer who designs simple and inexpensive solutions to real-world problems. This video produced for Teachers' Domain features her innovative design for testing the safety of drinking water in the developing world.

This is a lab activity where students will investigate solubility or miscibility of eight substances with water.

This activity is a small-group activity that makes students learn the subject matter of aqueous solutions (colloids, suspensions) and phase changes by writing a children's book. Learning by teaching.