Across
- 2. remains unchanged
- 4. equal in size going opposite way
- 6. anything that has volume or mass
- 9. Average of many measurements
- 11. Basic unit of an element
- 12. a row in a periodic table
Down
- 1. Size of displacement between two positions
- 3. negative charge of a particle
- 5. push or pull
- 7. energy energy with motion
- 8. the mass of an atom
- 9. Basic unit of life
- 10. charge negative or positive charges