Across
- 3. smallest unit of matter
- 5. name for columns in Periodic Table
- 12. negatively charged parts of atoms
- 14. anything that has mass and volume
- 15. can be an atom or a molecule
- 16. name for rows in Periodic Table
- 18. the result of # protons - # electrons
- 19. holds protons and neutrons in the center
- 20. equals the number of protons
- 22. made up of more than one type of atoms
- 24. Jello is an example
- 25. equals # protons + # neutrons
Down
- 1. same element with different # neutrons
- 2. made up of only one substance
- 4. combination of two or more substances
- 6. positively charged parts of atoms
- 7. two or more atoms put together
- 8. notes # of a type of atom in a molecule
- 9. uniform composition
- 10. non-uniform composition
- 11. have no charge
- 13. salad dressing is an example
- 17. salt water is an example
- 21. notes # of a type of particle
- 23. made up of one type of atoms