Principal Sponsors
Makes grants to address the most serious social and environmental problems facing society, where risk capital, responsibly invested, may make a difference over time.
National Science Foundation
An independent federal agency created by Congress in 1950 to promote the progress of science.
King Saud University seeks to become a leader in educational and technological innovation, scientific discovery and creativity through fostering an atmosphere of intellectual inspiration and partnership for the prosperity of society.
The O'Donnell Foundation is devoted to building model programs to enhance the quality of education.
Sugar and Salt Solutions
Aceste simulări nu au fost încă traduse în limba română . Pute'i accesa simularea, din meniul de mai jos, în limba engleză.
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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.
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Resurse
Principalele subiecte
- Soluții
- Ionic
- Covalență
Studii de caz
- Use pictures and proportional reasoning to explain changes in concentration
- Draw what happens at the molecular level when compounds dissolve in water
- Identify if a compound is a salt or sugar by macroscopic observations or microscopic representations.
- Explain how using combinations of solutes changes solution characteristics or not.
- Use observations to explain ways concentration of a solute can change.
- Describe ways the formula, macroscopic observations, or microscopic representations of a compound indicates if the bonding is ionic or covalent.
Sfaturi pentru profesori
Ghidul profesorului (pdf) conţine idei propuse de echipa PhET.
Idei pentru predare
| Title | Authors | Level | Type | Updated |
|---|---|---|---|---|
Sugar and Salt Solutions: intro to bonding
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Trish Loeblein | HS UG-Intro |
CQs HW Lab |
19.02.2012 |
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Concept Questions for Chemistry using PhET
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Trish Loeblein | HS MS UG-Intro |
CQs | 19.02.2012 |
Puteţi trimite ideile şi activităţile personale.
Simulări asemănătoare
Versiuni traduse:
Cerinţe software
| Windows | Macintosh | Linux |
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Microsoft Windows
XP/Vista/7 Sun Java 1.5.0_15 or later |
OS 10.5 or later
Sun Java 1.5.0_19 or later |
Sun Java 1.5.0_15 or later |
Credite
| Echipa de proiectare | Alţi colaboratori | Mulţumiri |
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