matter

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Across
  1. 4. Classification of elements such as silicon
  2. 5. Example of an element made up of atoms
  3. 10. Compound containing carbon
  4. 11. A pure substance made up of two or more kinds of atoms
  5. 12. Classification of elements such as lithium and sodium
  6. 14. Compound found in seashells
Down
  1. 1. Used to test acidity or basicity
  2. 2. Compounds formed by other elements in the periodic table as well as some carbon-containing compounds
  3. 3. Example of an element made up of molecules
  4. 6. A pure substance made up of one atom
  5. 7. Classification of elements such as oxygen and fluorine
  6. 8. Generally bitter and turns litmus from red to blue
  7. 9. Composed of two or more atoms
  8. 13. Generally sour and turns litmus from blue to red
  9. 14. Sample of Carbon-containing compound considered as inorganic