by msander | May 29, 2017 | Gr. 11-12 Chemistry
In this demo, the teacher creates a tower of sodium acetate trihydrate from a supersaturated solution. Your students’ curiosity will grow as you demonstrate the concepts of supersaturation and crystallization! The sodium acetate solution is a supersaturated solution....
by cbrookallred | May 11, 2017 | Gr 9-10 Science, Gr. 11-12 Chemistry
Introduction Flour is an ingredient that is found in most kitchens and used regularly for baking and cooking. Consequently, it is considered safe, and people do not regard the potential hazards. In reality, flour and dust explosions are extremely dangerous, and...
by msander | May 11, 2017 | Gr 9-10 Science, Gr. 11-12 Chemistry
The boiling point of a liquid depends on the external air pressure. When water is placed under vacuum, the boiling point decreases and the water boils. Boiling, however, is an endothermic process—as the water boils, the temperature decreases, and the water soon...
by cbrookallred | May 8, 2017 | Gr 9-10 Science
This demo models how convection occurs in the atmosphere and hydrosphere by showing what happens at the interface of a hot fluid and a cold fluid. This simulates what happens when cold and hot air masses meet, as well as why/how the ocean regulates climate. The ocean...
by cbrookallred | Apr 19, 2017 | Gr. 11-12 Biology
In this demonstration, students will see a model showing that antibodies bind to antigens as an immune response to foreign invaders. The use of multiple colours shows that antibodies are specific to particular antigens, and suggests that a resilient immune...
Recent Comments