1. Periodic Table
Metals

3. Atomic Structure All atoms have 3 parts: Protons (+) Neutrons (0)
Electrons (-)
Protons and neutrons are found in the nucleus.
Electrons are found moving around the nucleus on rings, (orbitals, shells)

5. Atomic Number tells you the number of protons
Atomic Mass tells you the number of protons + the number of neutrons
Sooo…the number neutrons = atomic mass minus atomic number
Generally….the number of protons = the number of electrons.

7. 1. How many protons does Boron (B) have?
2. How many neutrons does Argon (Ar) have?
22 neutrons
3. How many electrons does Sodium have (Na)?
11 electrons

8. Cards

9. What is a metal? What words describe a metal?
Chemists classify metals according to their properties such as:
hardness
shininess
malleability
conductivity
ductility

10. Hardness – describes how well a material is resistant to scratching.
Shininess (luster) – describes how light reflects off a material.

11. Malleable – describes how well a material can be pounded into a shape or sheet.
Ductile – describes how well a material can be pulled out or drawn into a wire.

12. Conductivity - the ability to transfer heat or electricity.
Thermal conductivity – transferring heat
Electrical conductivity – transferring electricity
Most metals have good conductivity.
Wood bad … metal good!

13. Metals in the periodic table
Alkali metals
All the elements in group 1.
Examples: lithium(Li), sodium (Na) and potassium (K)
These are the most reactive of all metals
In nature, they are always found in compounds
In a laboratory, they can be pure and are soft and shiny

14. Sodium
Potasium
Lithium

15. Metals in the Periodic Table
Alkaline metals
All the elements in group 2
Examples are Magnesium (Mg) and Calcium (Ca)
Harder and denser than group 1

16. Magnesium

17. Metals in the Periodic Table
Transition metals
Elements in groups 3-12
Examples are iron (Fe), and gold (Au)
They are fairly stable