조회수
1:01
Preparation of nascent hydrogen
0:21
Hydrogen Atom 3D v1.0
20:05
Hydrogen imp questions with solution
6:45
Atoms for Kids | What is an atom? | Learn about atoms and molecules with activities and worksheets
0:11
VAPING GAVE US CANCER #stopvaping
0:39
Tap water under the microscope! (You will be surprised!)
1:00
Making hydrogen and oxygen bubbles
0:50
Sodium metal, soft, reactive, and squishy
