Chapter 4-5 Attractive Forces Flashcards
What is ion ion attraction/interaction?
strong bond between positive and negative ions
Are all ionic compounds solid at room temperature?
yes
Name the two types of attraction for covalent bonds
dispersion force
dipole-dipole attraction
Explain dispersion force
attraction between nonpolar molecules
explain dipole-dipole attraction
attraction between polar molecules
what happens to the electrons in a non polar molecule?
electrons are shared equally
what happens to electrons in a polar covalent bond?
electrons are shared unequally
Do larger molecules distribute a higher or lower dispersion force?
higher
Is higher or lower temperature needed to break up larger molecules with a higher dispersion force?
higher temperature
Will larger molecules have a higher or lower boiling/melting point?
higher
Are dipole-dipole attractions stronger or weaker than dispersion force?
stronger
What bond is a special type of covalent bond is a dipole-dipole interaction?
hydrogen bonding
In what molecules is hydrogen bonding possible?
O-H and N-H covalent bonds
Are O-H and N-H bonds polar or nonpolar?
polar
Which end of the hydrogen bond will be slightly negative?
O or N
Which end of the hydrogen bond is known as the hydrogen bond acceptor?
the negative end
Which end of the hydrogen bond is known as the hydrogen bond donor?
the molecule on the positive end
What is an important feature (regarding water) that is unique to any molecule that forms a hydrogen bond?
It is soluble in water
