grade 7 first term Matter american .pptx

matter

1. Science Grade7 /1 st term Unit1 Lesson1 Matter and its characteristics Miss :Marina George

2. Matter It’s anything that has a mass and volume It’s the space that is occupied by the body cm3/m3/L It’s the amount of matter that the body contains gm /kg

3. How can we distinguish matters? Physical properties Chemical properties

4. a)Physical properties 1) Color Taste Smell

5. 2) Density

6. Density: It’s the mass of unit volume of a substance Or It’s the mass of one cubic centimeter  

7. 3) Melting and Boiling point

8. Melting point: It’s the temperature at which matter change from solid state into liquid state Boiling point: It’s the temperature at which matter change from liquid state into gaseous state

9. Thank you