17. When two or more atoms (either the same atoms or different atoms) react with one another, they may form a
(2 words). This will allow
unstable atoms to fill their valence shell and become more stable.
18. Atoms have a property called
which is how
strong of a 'pull' an atom has on electrons. The higher this number is, the
stronger its pull on electrons.
I
19. This property can influence the type of chemical bond that may form between
atoms. When the electronegativities of atoms are very different from one another
(i. e. one has a high electronegativity and one has a low electronegativity), it is
likely that an
bond will form.