class 9 & 10 3rd chp str of matter2
TRANSCRIPT
- 1. Associate Professor Chemistry Winsome College, Dhaka
- 2. , ---
- 3.
- 4.
- 5. +
- 6. , = = = 1 8
- 7. - +
- 8. , , -1.60 10-19 C 9.1110-28 g
- 9. +1.6010-19 C 1.6710-24 g
- 10. 1.675 10-24 g
- 11. Sun
- 12. , , ,
- 13. ? ? ?
- 14. -
- 15.