Click on the screenshot below to download a simulation of  Gas Properties. The download will be a java script file. You will need to have a Java Player to run the simulation. This can be downloaded at: https://www.java.com/en/download/win10.jsp 

If above simulation will not load, click on the link below to go to a simulation of “Concentration”

URL: https://phet.colorado.edu/en/simulation/legacy/soluble-salts

Offline version is available

Supporting Worksheets:

Teacher Guide: https://phet.colorado.edu/en/simulation/legacy/soluble-salts

Student Worksheet:

Topics

• Solubility
• Salt
• Solutions
• Chemical Equilibrium
• Saturation
• Chemical Formula
• Ksp
• Le Chatelier’s Principle

Description

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.

Sample Learning Goals

• Rank the solubility of different salts.
• Determine the ratio of anions and cations that create a neutral compound.
• Calculate the molarity of saturated solutions, and Ksp values.

This interactive learning activity is aligned with Solomon Islands Year Seven Science Curriculum:

• Strand: Natural and Processed Materials
• Sub-strand: 7.6 Solutions, Solvents and Solutes
• General Learning Outcome:
  • 7.6.2 be able to make different solutions (s)
• Specific Learning Outcome:
  • 7.6.2.1 produce a solution by dissolving solute in a solvent.
    • i. sugar (solute) in water (solvent)
    • ii. salt (solute) in water (solvent)
    • iii. klin powder (solute) in water (solvent)

All simulations available at http://phet.colorado.edu are open educational resources available under the Creative Commons Attribution license (CC-BY).

Permission is granted to freely use, share, or redistribute PhET sims under the CC-BY license.

Attribution: PhET Interactive Simulations
University of Colorado Boulder
https://phet.colorado.edu