1. Why are electronegativity values helpful in determining if a bond is ionic, polar
covalent, or just covalent?
2. Why do atoms like carbon and nitrogen not like to make ions, while sodium and
chlorine do?
3. Why do you think ionic bonds are usually weaker than covalent bonds?

One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.