Sharadhi_chemistry_9th

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Across
  1. 2. point at which solid turns to liquid
  2. 3. place where protons and neutrons are together
  3. 6. group of different type of atoms
  4. 9. negatively charged particle in an atom
  5. 10. first element in the periodic table
Down
  1. 1. chemical formula(name) of common salt
  2. 4. vertical column in the periodic table
  3. 5. supporter for combustion
  4. 7. total of protons and neutrons in an atom
  5. 8. solid form of water