2. Predict: Set the number of Oz molecules to five and the number of Hy molecule to eight.
A. How many oxygen atoms are present?
Hydrogen atoms?
B. How many water molecules could form from these reactants?
C. After the molecules react, which reactant will be left over?
D. Which reactant will be the limiting reactant?
E. Click Play and wait until Reaction complete is shown. What happened?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.