Osmosis is about the movement of water molecules and diffusion is about the movement of substances
I think the answer would be d but not 100% sure
Oxidation numbers is the right answer
A chemical reaction (signs)
- rusting
- change in base of chemical
- for example lets say u mix two chemicals, and then it becomes a different new chemical (it changed from the inside)
a physical
- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color
