Four physical properties of a piece of aluminium foil

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

What is the most important factor in determining climates.