Matter 8

12345678910
Across
  1. 3. atomic particle that has no charge
  2. 6. the smallest unit of matter
  3. 7. atomic particle with a negative charge
  4. 8. atomic particle that has a positive charge
  5. 9. another name for the group 0 gases
  6. 10. another name for the rows on the periodic table
Down
  1. 1. two or more elements that have been chemically combined
  2. 2. elements with similar properties are arranged into these on the periodic table
  3. 3. centre of an atom that contains protons and neutrons
  4. 4. another name for the group 7 gases
  5. 5. these elements conduct electricity, are shiny, and are found on the left of the periodic table