Across
- 3. Resistance to change in motion
- 9. Rapid back-and-forth movement
- 10. Two or more atoms combined
- 13. Plants make food with sunlight
- 14. A chemical change
- 15. Speeds up a reaction
Down
- 1. Force per area
- 2. Resistance when things rub together
- 4. Path electricity flows through
- 5. Center of an atom
- 6. Basic unit of matter
- 7. Needed to do work
- 8. Force that pulls objects down
- 9. Speed in a direction
- 11. Positive particle in an atom
- 12. Mass per volume