Everything Science Grade 10. Chapter 5: The periodic table.

1. 5. The periodic table Chemistry: Matter and materials Grade 10

2. Definitions and key concepts Term Meaning Atomic radius A measure of the size of an atom Electronegativity The tendency of atoms to attract electrons Ionisation energy The energy needed to remove one electron from an atom in the gas phase Group A column on the periodic table containing elements with similar properties Period A row on the periodic table

3. Trends across the periods

4. Names of the groups

5. Trends in the groups

6. For more practice or to ask an expert for help on this section see: www.everythingscience.co.za Shortcode: ESABM