A substance is followed by the symbol (/) in a chemical equation. What does the symbol represent?
OA.
The substance has the least molecules in the equation.
OB.
The substance is in the liquid state.
O c. The substance is produced last in the reaction.
OD.
The substance is dissolved in a liquid solution.
E.
The substance is lost at the end of the reaction.

c is the answer because when something is left after something evaporates that shows the chemical change.

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.