CHEMISTRY!

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Across
  1. 3. a thing that is composed of two or more separate elements; a mixture.
  2. 5. an element that has properties that are intermediate between those of metals and nonmetals.
  3. 6. periodic table
  4. 8. a chemical element that mostly lacks the characteristics of a metal.
  5. 9. an element that readily forms positive ions and has metallic bonds.
Down
  1. 1. An atom or molecule with an electric charge due to the loss or gain of one or more electrons.
  2. 2. A chemical bond that generates two oppositely charged ions
  3. 4. An extremely small amount of a thing or quality.
  4. 7. Electrically neutral group of two or more atoms held together by chemical bonds.