Pg 50-51 #13-18
13. Drawing
14. A. models I, II, and IV
B. models III and V
15. Chemical formulas provides information about compounds and elements.
16. A. Phosphoric Acid:
Hydrogen (H): 3 atoms
Phosphorus (P): 1 atom
Oxygen (O): 4 atoms
B. Sodium Hydroxide:
Sodium (Na): 1 atom
Oxygen (O): 1 atom
Hydrogen (H): 1 atom
C. Sulfur dioxide:
Sulfur (S): 1 atom
Oxygen (O): 2 atoms
17. A. drawing:
B. Drawing:
18. Drawing:
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