Unit: 7 Elements and compounds

12345678910
Across
  1. 1. give the chemical symbols for magnesium and hydrogen.
  2. 6. Suggest a name for a compound containing potassium and chlorine
  3. 7. The tiniest particle of an element that can exist
  4. 9. are also known as alkalis
  5. 10. A substance made up of only one type of atom
Down
  1. 1. A group of atoms bonded tightly together
  2. 2. give the chemical symbols for Calcium carbonate
  3. 3. A column in the periodic table
  4. 4. A row in the periodic table
  5. 5. A substance made of more than one kind of atom bonded together
  6. 8. contains the symbols of the elements that are bonded together in the compound