1. Metals
Chemistry

2. Learning Goals
To be able to explain the properties of metals within the periodic table

3. Properties of Metals Metals are usually shiny
Metals are good conductors of electricity and thermal energy; property is called conductivity
Metals are solid at room temperature, except mercury (Hg)
Most metals are malleable and ductile

4. Important Families Metals are located to the left of the staircase
There are two chemical families we will learn about: the alkali metals (group 1), and the alkaline earth metals (group 2)
Metals in the middle of the periodic table are called transition metals
The remaining metals are referred to as other metals
The most reactive metals are at the bottom of the table (e.g. Fr)

6. Group 1 – Alkali Metals
Consists of the elements below hydrogen in the first column of the periodic table, starting with lithium
Members of this chemical family are highly reactive
Reactivity is due to the single electron in the outermost energy level
Reactivity increases as you go down the group

8. Group 2 – Alkaline Earth Metals
Consists of the elements in the second column
Includes beryllium (Be), magnesium (Mg), and calcium (Ca)
These metals have two electrons in their outermost energy levels and are very reactive
The reactivity also increases as you go down the group

10. Other Metals
Everything else left of the staircase
NOT hydrogen!

11. Interesting Uses and Applications
Mixtures of metals are called alloys
Brass is an alloy made of copper (Cu) and zinc (Zn)
Stainless steel is mostly iron (Fe) mixed with nickel (Ni) and chromium (Cr)
Gold (Au) and silver (Ag) are the main metals used in fine jewellery
Metals can be added to glass and fireworks to create different colours

12. Hidden Hazards
Some people are allergic to the nickel (Ni) found in some earrings and jewellery
Ingesting “heavy metals” such as mercury (Hg) and lead (Pb) can cause damage to internal organs, including the brain
Lead can also be found in leaded glass for drinking , and plumbing pipes

13. Success Criteria I CAN describe the properties of metals
I CAN locate the alkali metals, alkaline earth metals, transition metals, and other metals on the periodic table

14. To Do… Video Demonstrations Worksheet Element Poster (due today)
Bohr Rutherford Diagrams (due today)