GCSE chemistry video: periodic table
This video makes a great introduction to the development and layout of the periodic table for GCSE chemistry or combined science students.
It explains the organisation of the rows or periods by elements of increasing atomic number and the arrangement of the columns or groups into elements with similar properties.
The video comes with comprehension questions to encourage focused viewing. Answers are provided on the second PowerPoint slide.
This clip of 2 minutes and 15 seconds can be played from within the PowerPoint or downloaded as an MP4.
An extract from the comprehension questions and answers:
Task 2:
a. Why is the periodic table a useful tool?
It allows us to identify patterns and relationships between the elements.
b. Why were there gaps in Dmitri Mendeleev’s early periodic table?
He left space for elements that he predicted must exist.
