Periodic table
Across
- 2. which group does silicon belong to
- 5. The equation below represents a chemical reaction that occurs in living cells.how many atoms are represented in the reactants of this equation?
- 8. Groups (columns) tell you an atom's
- 11. How many energy levels does Calcium have?
- 14. Which element has 2 valence electrons and 4 energy levels?
- 16. which element would have similar properties tomagnesium
- 17. How many valence electrons does Gallium have?
- 18. Which element is the most reactive?
- 21. The chemical formula for sodium sulfate is Na2SO4. How many total atoms are in the formula?
Down
- 1. which group does iron belong to
- 3. whichgroup does neon belong to
- 4. Which element would have similar properties to Sulfur?
- 5. which group does helium belong to
- 6. How many valence electrons are in an atom of each element in Group 15 in the periodic table?
- 7. A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment?
- 9. Periods tells you an atom's ...
- 10. Which element would have similar properties to
- 12. 2Mg + O2 → 2MgOIn the equation above, what is the total number of atoms on the reactant side?
- 13. Which element has 2 valence electrons and 3 energy levels?
- 15. Which element would have similar properties to bromine
- 19. Which element has 3 energy levels and similar properties to Oxygen?
- 20. which group does nitrogen belong to