Chemistry

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Across
  1. 2. Type of reaction that requires energy
  2. 4. A molecule composed of two or more different atoms/elements
  3. 5. Charged particles
  4. 8. Type of bond between two oppositely charged ions
  5. 11. Making or breaking of chemical bonds
Down
  1. 1. Type of reaction that releases energy
  2. 3. Occurs when electrons are transferred or shared
  3. 6. Smallest particle of an element
  4. 7. Two or more chemically joined atoms
  5. 9. Anything that occupies space and has mass
  6. 10. Type of reaction that rearranges or swaps molecules
  7. 12. Simplest form of matter