Periodic Table Puzzle

123456789101112
Across
  1. 4. A way to write a compound with the elements chemical symbols.
  2. 5. Numbers are the positive or negative numbers assigned to an element to show its ability to combine with other elements to form a compound.
  3. 8. Bonds A force of attraction between atoms when they share electrons.
  4. 9. Reactions Are changes when atoms interact to form new
  5. 11. A charged particle.
  6. 12. with different properties and characteristics.
Down
  1. 1. Two elements combine chemically to form a new substance.
  2. 2. Atoms Atoms that covalently bond with
  3. 3. Stable An atom is stable (will not bond) if its outer level is filled with electrons. An element wants to be stable.
  4. 6. Diagram Uses a symbol of the element and dots to represent the electrons in the outer level.
  5. 7. Bond Atoms can lose, gain, and share electrons in an effort to become stable.
  6. 10. Bonds A force between oppositely charged particles.