Science quiz Crossword

12345678910
Across
  1. 4. a group of atoms held together by chemical bonds
  2. 5. an object or material that allows the flow of energy
  3. 7. participle with a positive or negative change
  4. 9. forms between metal atoms when the outermost energy levels overlap
Down
  1. 1. atoms share one or more pairs of electrons
  2. 2. The outermost electrons in the electron shell
  3. 3. A subatomic particle that has a negative charge
  4. 6. able to be formed into different shapes
  5. 7. a force that brings oppositely charged ions together
  6. 8. ability of one substance to dissolve in another at a given temperature and pressure
  7. 10. a smallest unit of an element that maintains the properties of that elements