properties of small covalent molecules Flashcards
1
Q
do small covalent molecules have low or high melting and boiling points?
A
they have low melting and boiling points
2
Q
what are they at room temperature?
A
they are usually gases or liquid at room temp
3
Q
what holds them together when they are in liquid form?
A
strong covalent bonds
4
Q
what are the forces like between molecules?
A
weak intermolecular forces
5
Q
what happens when we change the size of the covalent molecule?
A
the intermolecular forces increase
6
Q
what are alkanes?
A
small covalent bonds
7
Q
why do alkanes boiling point increase when they get larger?
A
because the intermolecular force increases and require more energy to break
8
Q
what do small covalent molecules not conduct?
A
they don’t conduct electricity (because the molecules don’t have an overall electric charge)
