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.

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. Arabic Language.

This lab is a two part investigation on separating a solid from a liquid where students are asked to develop their own investigable question and carry out the experiment on day two.

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.

In this chapter, we will learn the following ideas:·Liquid solutions: Aqueous and non aqueous solutions, concentrated and dilute solutions·Gaseous and solid solutions· Solubility: - Saturated solutions, rate of dissolving,- Factors influencing solubility 

This chemistry activity was created to enhance student learning around solutions. It guides students through Phet simulations and then asks comprehension questions thereafter.

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.

What happens when sugar and salt are added to water? Pour in sugar, shake in salt, and evaporate water to see the effects on concentration and conductivity. Zoom in to see how different sugar and salt compounds dissolve. Zoom in again to explore the role of water.

This textbook was developed as a result of a Round 12 Textbook Transformation Grant.

Did you know that cities take up less than 3% of the earth’s land surface, but more than 50% of the world’s population live in them? And, cities generate more than 70% of the global emissions? Large cities and their hinterlands (jointly called metropolitan regions) greatly contribute to global urbanization and sustainability challenges, yet are also key to resolving these same challenges.

If you are interested in the challenges of the 21st century metropolitan regions and how these can be solved from within the city and by its inhabitants, then this Sustainable Urban Development course is for you!

There are no simple solutions to these grand challenges! Rather the challenges cities face today require a holistic, systemic and transdisciplinary approach that spans different fields of expertise and disciplines such as urban planning, urban design, urban engineering, systems analysis, policy making, social sciences and entrepreneurship.

This MOOC is all about this integration of different fields of knowledge within the metropolitan context. The course is set up in a unique matrix format that lets you pursue your line of interest along a specific metropolitan challenge or a specific theme.

Because we are all part of the challenges as well as the solutions, we encourage you to participate actively! You will have the opportunity to explore the living conditions in your own city and compare your living environment with that of the global community.

Students show their creativity and think like engineers as they design products or services that can be used to improve environmental problems in the community. While being aware of the steps of the engineering design process, students are challenged to consider all aspects of their products/services, including their costs, and impacts on the environment and people in their communities. They present their "green" solutions, in the form of advertisements, to the class for critical review of their feasibility.

This course is aimed at the aspiring planning practitioner, policy-maker, or industry decision-maker with an interest in urban transportation and environmental issues in Latin America. The course will focus on current transport-related themes confronting many cities in the region, including: rapid motorization and suburbanization and subsequent impacts on transportation infrastructure and quality of life; public sector management and improvement of privately-owned and operated transit systems; and, transportation air pollution problems and potential solutions.

The course will be geared towards interactive problem-solving, taking advantage of students’ skills and experiences in: institutional analysis, policy analysis, and project and program evaluation and implementation. Detailed knowledge of transportation planning is not required; instead, the course will attempt to place the general practitioner into a specific transportation public policy situation and draw from her skills to devise real solutions. To fulfill this problem-solving orientation, the course will be divided into two parts. Part I of the course will consist of a series of lectures on the principal issues surrounding transportation in the developing world (including motorization, fiscal pressures, urban sprawl), concepts of  sustainability as they relate to urban transportation, regional strategic planning approaches, and transportation policy and technology options and examples of successful implementation.

After these lectures, Part II of the course will be dedicated to the two case studies, where students will apply the knowledge gained in Part I to develop strategic solutions to the transport-land use-environment challenges in two different cities.

Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!