Here's the matching for the descriptions provided:
- Ag (Silver): Element
- MgCl2 (Magnesium chloride): Compound
- Bowl of chicken noodle soup: Heterogeneous mixture
- Powerade Sports drink: Homogeneous mixture
So the answers are:
- Ag (Silver): Element
- MgCl2 (Magnesium chloride): Compound
- Bowl of chicken noodle soup: Heterogeneous mixture
- Powerade Sports drink: Homogeneous mixture