Across
- 1. the total number of groups found in the Periodic Table
- 5. sodium potassium and lithium can be found in group number _______
- 6. an element found in NH3 besides hydrogen
- 10. ________ composition of a compound is unique to each substance
Down
- 2. first element in the periodic table
- 3. last element in group I
- 4. chemical symbol for iron
- 7. the first element in group VI
- 8. the periodic table is divided into non metal and ________
- 9. Ni is the chemical symbol
- 10. Chemical symbol for copper