1.20 - 1.22 Activity 2. Periodic variations
Students should:
1.20 understand how to use electrical conductivity and the acid-base character of oxides to classify elements as metals or non-metals
1.21 identify an element as a metal or a non-metal according to its position in the Periodic Table
1.22 understand how the electronic configuration of a main group element is related to its position in the Periodic Table
Good conductors?
Acid or base?
This video animation shows how the acid/base properties of the oxides varies across the periodic table. The pattern is not perfect partly because many non-metals can form more than one oxide and also because their solubility varies. However a general trend can be seen.
Stop the video after 21 seconds and try to predict what the trend will be. Test your prediction by watching the rest of the video.