Chemistry

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Across
  1. 2. The branch of science that deals with the properties, composition, and structure of elements and compounds.
  2. 6. the basic unit of a chemical element.
  3. 7. A solid material that is typically hard shiny.
  4. 9. Number The quantity of matter contained in an atom of an element.
  5. 10. A small, positively charged particle of matter.
Down
  1. 1. The number of atoms of that element.
  2. 3. Mass The number of protons in the nucleus of an atom.
  3. 4. A substance made from two or more different elements that have been chemically joined.
  4. 5. A small particle with a negative charge of matter.
  5. 8. Anything that takes up space.