Tcz ikqh bmt
Dàré gàmé

Acontrol during an experiment. might change remains constant does not exist does change

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.