Across
- 2. a substance made of two or more elements
- 5. a substance that cannot be broken down
- 7. matter cannot escape to the surroundings
- 9. positively charged particles
- 11. level the specific amount of energy an element has
- 13. particles with no charge
- 15. a change in which the appearance or form changes, but nothing new is made
Down
- 1. matter can escape to the surroundings
- 2. a change in which a new substance is chemically formed
- 3. anything that has mass or takes up space
- 4. nothing can be created or destroyed
- 5. negatively charged particles
- 6. the beginning of an equation
- 8. the smallest particle of an element
- 10. the end of an equation
- 12. the center of an atom
- 14. two or more substances that are mixed together