Classifying Matter

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Across
  1. 4. basic particle from which all elements are made
  2. 5. a substance that cannot be broken down into any other substances by chemical or physical means
  3. 8. a force of attraction between two atoms
  4. 10. Positively charged particle in the nucleus of an atom
  5. 11. a group of two or more atoms held together by a chemical bonds
  6. 12. a neutral particle in the nucleus of an atom
Down
  1. 1. anything that has mass and takes up space
  2. 2. shows the elements in the compound and the ratio of atoms
  3. 3. made of two or more substances that are together in the same place, but their atoms are not chemically bonded
  4. 6. negatively charged particle in the nucleus of an atom
  5. 7. Center of an atom
  6. 9. a substance made of two or more elements that are chemically combined in a set ratio