Article definition: All that mass and volume Bloc: The amount of matter a body contains the size: The space a body occupies from space material properties Two types 1/ physical properties 2/ chemical properties First: the physical properties: it is 1/ Colour, taste and smell 2 / density 3 / melting point 4 / boiling point 5 / degree of hardness 6 / electrical connection 7 / heat conduction 1- Colour, taste and smell: # It is possible to distinguish between materials: via A- Color: such as gold and silver. 2- Taste: like sugar, salt and flour. 3- Smell: like vinegar and perfume. Lesson questions: Complete 1- It is possible to distinguish between flour and salt by .......... 2- It is possible to distinguish between ..................................................... 3- The article is ............................