Explains the idea of coordination numbers and gives several examples.
To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.
To describe images using words using the Visual Literacy strategy.
Learn why sapphires might provide the basis for tougher cell phone screens in the near future.
This page explains the relationship between the arrangement of the ions in a typical ionic solid like sodium chloride and its physical properties - melting point, boiling point, brittleness, solubility and electrical behaviour. It also explains why caesium/cesium chloride has a different structure from sodium chloride even though sodium and caesium/cesium are both in Group 1 of the Periodic Table.