melting and boiling points in depth Flashcards
1
Q
what two structures have high melting and boiling points
A
ionic lattice and covalent structures
2
Q
what structure has a low melting and boiling point
A
covalent molecular
3
Q
when you melt or boil something you
A
need to move molecules
4
Q
Forces of attraction between covalent molecules
A
are weak
5
Q
most covalent molecules are
A
liquid or gas at room temperature
6
Q
covalent bonds
A
are strong
7
Q
to break covalent bonds
A
a lot of energy are required
8
Q
melting ionic substances
A
incolves breaking the electrostatic forces of attraction between the ions
9
Q
to break ions
A
involves a lot of energy
