Chemical Families

1. Chemical Families

2. Alkali Metals metals • Extremely reactive • Soft • Shiny • Silver • Malleable • Ductile • Conduct heat and electricity easily • Can explode if exposed to water

3. Alkali Earth Metals metals • Less reactive than the alkalis • Sometimes shiny, soft, but not as soft as alkalis, • Burn in bright colors, and often used in fireworks • Malleable • Ductile • Conduct heat and electricity

4. Lanthanoids metals • Silvery-white • Soft • Very reactive • High melting and boiling points • Burn easily

5. Actinoids metals • Radioactive • Very dense • Tarnish easily

6. Transition Metals metals • Very hard • High melting and boiling points • Malleable • Conduct electricity easily

7. Post Transition Metals metals • Lower melting points • Softer than other metals • Dense

8. Metalloids • Semi-conductors (insulate and conduct electricity) • Properties of metals and non-metals

9. Other Non-metals non-metals • Do not conduct electricity or heat well • Very brittle • Non-malleable • No lustre – do not reflect light • Includes one element on the left and six elements on the right of the periodic table

10. Halogens non-metals • Very reactive • Form “salts” when they combine with other elements

11. Noble Gases non-metals • Very stable • Exist as gases