Periodic Table Crossword Puzzle
Across
- 3. Groups 3-12
- 5. this was the name of the noble gases because scientists thought they would not reactive.
- 7. Group 14
- 8. a man who played chemical solitaire and made a table that became the Periodic table of the elements
- 9. He determined the number of protons-the atomic number- in an atom
- 11. the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
- 12. in chemistry, a horizontal row of elements in the periodic table
- 13. another term for metalloids
- 15. one of the elements of Group 17 of the periodic table
- 16. one of the elements of Group 1 of the periodic table
- 20. elements that undergo a process that allows them to combine to form into compounds
Down
- 1. an element that is shiny and that conducts heat and electricity well
- 2. one of the elements of Group 2 of the periodic table
- 4. Group 15
- 6. an element that conducts heat and electricity poorly
- 10. one of the elements of group 18 of the periodic table
- 14. another term for group
- 17. an element that has properties of both metals and nonmetals
- 18. a vertical column of elements in a group share chemical properties
- 19. describes something that occurs or repeats at regular intervals