Chemistry

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Across
  1. 4. A high-energy state of matter with charged particles
  2. 5. A change of state where a solid turns into a liquid
  3. 6. A positively charged ion formed when an atom loses electrons
  4. 7. The center of an atom that contains protons and neutrons
  5. 8. The ability of a material to allow electricity to flow
  6. 10. A change of state where a gas turns into a liquid
  7. 11. A change of state where a liquid turns into a solid
Down
  1. 1. A change of state where a solid turns directly into a gas
  2. 2. Electrons in the outer shell that determine how an element reacts
  3. 3. The arrangement of electrons in shells around the nucleus
  4. 9. An element with properties of both metals and nonmetals