This demonstration is an entertaining way to introduce simple chemical reactions and the types of evidence that indicate the occurrence of chemical change, including the production of a gas. A link can be provided to the gas tests conducted in Grade 9 to help focus students’ observations. Since this demonstration involves a decomposition reaction, it can be used to introduce the classification of the different types of chemical reactions.
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Teacher Demo: Hot Ice
Categories: Teacher Demonstration
Heat transfers in physical and chemical reactions have many practical applications. Exothermic reactions release heat to the surroundings, resulting in an increase in surrounding temperature.... read more
Teacher Demonstration: Thinking about the Movement of Water
Categories: Teacher Demonstration
The distinction between diffusion and osmosis is not clear to many students. Observing coloured particles (such as food dye) diffuse in water shows direct evidence of diffusion, but the movement of... read more
STRUCTURES, STRUCTURES EVERYWHERE!
Categories: Lab/Student Activity
The students and teacher will go on a walk to look for and record the different types of structures they see in their community. Discussion will revolve around what a structure is, what makes it... read more