2. Kaolinite is represented by the chemical formula Al 2 Si 2 O 5 (OH) 4, and it most often occurs as clay-sized, platelike, hexagonally shaped crystals.

5. Physical Properties may be intensive or extensive Intensive properties do not depend on the amount of the substance (melting point, boiling point, density

6. Intensive properties color Aluminum metal is gray colored. taste Lemon juice (citric acid) is sour. melting point Aluminum has melting point of 660 ° C. boiling point Water has a boiling point of 100 ° C. density Water has a density of 1 g/ mL luster Metals are lustrous (shiny). hardness Diamond is the hardest substance

7. Physical Properties may be intensive or extensive Extensive properties are those that do depend on the amount of the substance (mass, volume, length) Intensive properties do not depend on the amount of the substance (melting point, boiling point, density