Periodic table, formulas, state changes

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Across
  1. 1. The elements in group 1 are called ____.
  2. 4. The number belonging to each element that is a whole number and counts up from 1 to 118.
  3. 7. The weight, or mass, or an element's atoms.
  4. 9. The name of the group containing Chlorine and Fluorine
  5. 13. Metals are found on the ____ side of the periodic table.
  6. 15. The last name of the person credited with creating the modern periodic table.
  7. 16. The term for the one or two letters used to represent each element.
  8. 17. The state of matter where water molecules are close together but can glide past each other.
  9. 18. The name for the little number 2 after the oxygen in the formula CO₂ to show there are two oxgyen atoms in carbon dioxide.
  10. 22. Metals have ____ ion charges.
  11. 23. The elements along the diagonal line separating metals from non-metals have properties in between the two (also called semi-metals).
  12. 25. The alkaline earth metal in period 3.
  13. 28. The name of the element with the symbol Fe.
  14. 29. Non-metals are found on the ____ side of the periodic table.
  15. 30. The name of the element in group 15 period 2.
Down
  1. 2. The name of the elements found in groups 3-12
  2. 3. The state change from gas to liquid.
  3. 5. The state of matter where molecules or atoms have the least energy.
  4. 6. The element usually shown at the top of group 1 that is NOT a metal.
  5. 8. The large number out in front of a formula that tells you how many molecules there are. For example, the 3 in 3O₂ which represents three oxygen molecules.
  6. 10. The very unreactive gases found in group 18.
  7. 11. A type of atom found on the periodic table. Also the term for a chemical substance made of only one type of atom. For example: Na, O₂, P₄
  8. 12. The name of the element in group 6 period 4.
  9. 14. The state change from solid directly into gas. (Dry ice does this!)
  10. 19. The proper term for a row (across) of elements on the periodic table.
  11. 20. Non-metals have ____ ion charges.
  12. 21. A chemical substance made of two or more different types of atoms. For example: NaCl, CO₂, H₂O
  13. 24. The state change from liquid to gas.
  14. 26. The least reactive element in period 2.
  15. 27. The proper term for a column (up and down) of elements on the periodic table.