Physical and Chemical Reaction

Edit Answers
1234567891011
Across
  1. 4. Two or more elements chemically combined together
  2. 7. The reactants can be turned back to the products
  3. 10. A reaction where new compounds are formed
  4. 11. Chemical symbol is Na
Down
  1. 1. Chemical symbol is C
  2. 2. A liquid compound containing 2 Hydrogen atoms and 1 Oxygen atom
  3. 3. Chemical symbol is O
  4. 5. Chemical symbol is Mg
  5. 6. A reaction where NO new compounds are formed
  6. 8. Made up of one type of atom only
  7. 9. Particles are tightly packed together