Across
- 2. - Sodium chloride seasoning
- 7. - Two or more elements bonded together
- 9. - Shiny precious metal element
- 10. - Energy we can see with our eyes
- 12. - Path electrons take around nucleus
- 13. - Element found in all living things
- 14. - Compound made of H₂O
- 15. - Pure substance on periodic table
- 18. - What chemicals do when they combine
- 21. - Dense center of an atom
- 22. - Change from solid to liquid
- 23. - State of matter with fixed shape
Down
- 1. - Positive particle in the nucleus
- 3. - Tiny building block of all matter
- 4. - Shiny element that conducts electricity
- 5. - Tiny packet of light energy
- 6. - Negative particle orbiting nucleus
- 8. - Two substances combined physically
- 11. - Metal that rusts when exposed to oxygen
- 16. - Anything with mass that takes up space
- 17. - Connection between atoms
- 18. - What happens when iron meets oxygen
- 19. - Mixture of gases we breathe
- 20. - Form of energy that makes things hot
- 22. - Amount of matter in an object