Observar un canvi químic

Authors

  • Roser Ylla i Boré
  • Teresa Calveras i Barniol

Abstract

We want to describe and analyze the realization of a didactic activity which involves a chemical change. The described activity is for students age 11-12. In this article, the world particle means basic unity of substance. Because of this, when we speak about chemical changes, we say that particles are changing. The matter model used in this article doesnt identify the world particle with the world atom. At secondary school, when speaking about chemical change, the relationship between the chemical change and the atoms will be more explicit and teachers will explain that in chemical changes, atoms do not change, but redistribute or rearrange in another way.

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Published

2009-05-06

Issue

No. 2 (2009)

Section

Ensenyar i aprendre ciències

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