1. Periodic Table 101 SESSION 1&2: Properties of elements
Metals, non-metals and metalloids

2. Physical Properties
Aspects of an object or substance that can be observed and/or measured without changing it.

3. Physical Properties
Colour: the pigmentation of an element in natural light.
Flame colour: the colour of an element when it is introduced to a flame.
Melting point: the temperature at which a solid changes into a liquid.
Boiling point: the temperature at which a liquid changes into a gas.

4. Physical Properties
Conductivity: the ability of a substance to allow heat or an electric current to flow through it.
Solubility: the degree to which a substance will enter into solution (dissolve).
Malleable: if a material can be hammered into sheets.

5. Physical Properties Ductile: if a material can be drawn into a wire.
Hardness: the ability of a material to resist scratching or denting.
Flexible or brittle: a material’s ability to bend easily or snap when bent.
Lustre: a material’s ability to reflect light especially when polished. I.e. shiny or dull.

6. Chemical Properties
Aspects of an object describing its potential to undergo a chemical change.

7. Chemical Properties Reactivity with oxygen Reactivity with water
Reactivity with an acid
Chemically inert

9. Metals

10. Metals Metals have the following properties:
Solid at room temperature (except Hg)
High melting and boiling points (except Hg)
Are malleable and ductile
Are usually lustrous and can be polished
Metals conduct electricity
Metals are flexible

11. Non-metals

12. Non-metals Non-metals have the following properties:
Usually gases or solids at room temperature (except Br)
Low melting and boiling points
Are not malleable or ductile
Do not have a metallic lustre
Are brittle and break when subjected to stress and strain

13. Metalloids

14. Metalloids
Possess some characteristics of metals and some of nonmetals.
Generally they have physical characteristics of a metal, but behave chemically more like non-metals.

15. Position of groupings