Across
- 2. discovered a pattern to the elements
- 4. elements in Group 2
- 8. the properties of this element are not like any single group
- 9. most elements are classified as this; found on the left of the table
- 12. used in thermometers and the only transition metal that is liquid at room temperature
- 14. states that repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
- 15. found to the right in the Periodic Table
- 17. happening at regular intervals
Down
- 1. one of the elements of group 17; combines with most metals to form salts
- 2. also called semiconductors
- 3. unreactive nonmetals in Group 18
- 4. elements in Group 1
- 5. group 3-12 in the Periodic Table
- 6. shiny reactive metals that are in the same row as lanthanum
- 7. forms a wide variety of compounds such as proteins, fats, and carbohydrates
- 10. makes up 20% of air
- 11. makes up 80% of the air we breathe
- 13. radioactive atoms that are in the same row as actinium
- 16. a vertical column of elements in the periodic table
- 17. a horizontal row of elements in the periodic table