Across
- 2. particle with no charge
- 5. letters used to represent an element
- 7. type of charge carried by an electron
- 9. anything that takes up space
- 13. positively charged particle
- 15. negatively charged particle
- 18. type of charge carried by a proton
Down
- 1. number of protons and neutrons
- 3. number of protons in an atom
- 4. particles the particles that are inside an atom are called
- 6. type of element that is shiny and conducts heat
- 8. smallest unit of an element
- 10. pure substance made of one type of atom
- 11. two or more atoms chemically joined together
- 12. positive, negative, or neutral
- 13. table chart that organizes the elements
- 14. center of an atom
- 16. horizontal row on the periodic table
- 17. vertical column on the periodic table