Chemistry U1L3 metal an non-metal
21:52
Chemistry U1L4 part one calculate oxidation number.
17:00
Chemistry U1L1 part 1
19:36
U2L4 free fall acceleration
28:20
U2L3 Equations of motion
27:05
Concepts of Biology Chapter 2: Chemistry of Life Part 1
18:46
Chemistry U1L1 part 2
17:20
U2L2 Acceleration
15:50