6. If more reactants are used in a chemical reaction, more products will be produced. This is because a) More reactants cause the reaction to heat up
b) More reactants take up the same volume
c) More reactants have more atoms to react to form more products
d) Too many products can slow down the reaction

D

Explanation:

"the periodic table is arranged in order of atomic number."

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.