1. Physical Properties

2. Colour
Is it black, white, red, etc

3. Texture
Fine, coarse, smooth, gritty

4. Odour
Ordourless, spicy, like stinky, shoes?

5. Lustre
Shiny, dull

6. Clarity
Clear, cloudy, transparent, opaque

7. Taste
Sweet, sour, bitter, salty

8. State
Solid, liquid or gas

9. Density
Ratio of mass to volume (g/cm3)

10. Hardness
Amount it can be scratched (little or a lot)

11. Melting Point
Temperature at which it melts

12. Boiling Point
Temperature at which it boils

13. Solubility
Ability to dissolve

14. Viscosity
How a substance flows

15. Malleability
Ability to be hammered into a sheet

16. Ductility
Ability to be pulled into a wire

17. Conductivity
Ability to carry electricity

18. Brittleness
Does it break when bent