What occurs when a substance is reduced?
Pls help fast I’m stuck :!!

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false