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Ross, Keith – School Science Review, 2019
This article argues that we need to make use of our everyday experiences when introducing concepts in chemistry that are often obscure. It uses reaction rates as an example and explores a common misconception related to the explanation of the effect of rising temperature on the rate of slow reactions.
Descriptors: Science Instruction, Chemistry, Scientific Concepts, Heat
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Goodwin, Alan – School Science Review, 2012
Evaporation and boiling are both terms applied to the change of a liquid to the vapour/gaseous state. This article argues that it is the formation of bubbles of vapour within the liquid that most clearly differentiates boiling from evaporation although only a minority of chemistry textbooks seems to mention bubble formation in this context. The…
Descriptors: Chemistry, Textbooks, Science Instruction, Scientific Concepts
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Boohan, Richard – School Science Review, 2011
Over the last few decades, smart materials have become increasingly important in the design of products. Essentially, a smart material is one that has been designed to respond to a stimulus, such as a change in temperature or magnetic field, in a particular and useful way. This article looks at a range of smart materials that are relatively…
Descriptors: Technology, Stimuli, Heat, Mechanics (Physics)