You're close! Here are the eight levels of organization from smallest to largest, with a few adjustments:

1. Atoms: The fundamental building blocks of matter.

2. Molecules: Two or more atoms bonded together.

3. Organelles: Specialized structures within cells that perform specific functions.

4. Cells: The basic unit of life, containing organelles.

5. Tissues: Groups of similar cells working together to perform a specific function.

6. Organs: Structures composed of different tissues working together for a common purpose.

7. Organ Systems: Groups of organs working together to carry out major bodily functions.

8. Organism: A complete living being made up of organ systems.