Automatically remove your image background. Try it now!
consists of a nucleus positively charged protons and neutrally charged neutrons. negatively charged electrons are arranged outside of the nucleus
groups of two or more atoms held together by chemical bonds
ability of an atom to attract electrons
3 kinds of bonds
: ionic, covalent, hydrogen
bonds formed between two atoms when one or more electrons are transferred from one atom to the other. occur when electronegativity is very different and one atom has a much stronger pull.
atom that gains electrons has a negative charge
atom that loses electrons has a positive charge
ex. Na+ Cl- = NaCl
form when electrons between atoms are shared. occurs when electronegativities are similar.
-nonpolar covalent bond
-polar covalent bond
nonpolar covalent bons
bonds form when electrons are share equally. when the 2 atoms sharing electrons are identical
bonds are formed when electrons are shared unequally. different electronegativities and an unequal distribution of the electrons results
weak bonds between molecules. form when a positively charged hydrogen atom in one covalently bonded molecule is attracted to a negatively charged area of another covalent bond