Across
- 3. have particles that are far apart and move very fast
- 4. negatively charged ions
- 6. the study of the composition, structure, properties,and reactions of matter
- 9. positive charge
- 11. are located along the heavy zigzag line of the periodic table
- 13. negative charge
- 14. composed of one type of atom
- 16. have particles that are close together in a fixed arrangement
- 17. contain elements with similar properties in vertical columns.
- 18. neutral charge
Down
- 1. are horizontal rows of elements, counted from top to bottom of the table as Periods 1−7.
- 2. material that makes up all things
- 5. have particles that are close together but mobile
- 7. positively charged ions
- 8. are located to the right of the periodic table
- 10. most abundant element
- 12. located to the left of the periodic table
- 15. composed of two or more elements always combined in the same proportion