Across
- 2. to have mixed feeling about something
- 4. closed toed _____
- 7. specialized structures in a cell
- 9. an item you use to protect your eyes while performing an experiment
- 11. a group of cells
Down
- 1. a lasting chemical connection between atoms, ions, and molecules
- 3. a group of atoms bonded
- 5. a group of tissues that do a specific job
- 6. any chemical that changes an organism's physiology and psychology
- 8. the smallest structural and functional unit of an organism
- 10. smallest unit of ordinary matter