การดู
22:10
General Science 101 - Introduction
3:04
The Official House of General Science Tour
2:08
What is Hard and soft science?, Explain Hard and soft science, Define Hard and soft science
11:41
Soft and hard water !! Chemistry !! General science !! Water treatment !! Soft water ! Hard water !!
0:26
This is SO cool!
12:28
"How Good is Your 💡 50 Science Quiz Questions 🌟 to Test Your Knowledge? 🧪"
0:48
rating how well metal Elements flatten #periodictable
0:53
The Gallium Metal #gallium #science #sciencefacts
