Unit 1-(d) Bonding, Structure and Properties-C. Properties Flashcards
0
Q
Why do metals and graphite conduct?
A
Because they contain free electrons
1
Q
Do metal elements and graphite conduct?
A
yes
2
Q
Do covalent substances conduct?
A
nope
3
Q
Why do covalent substances not conduct?
A
They are made of uncharged molecules
4
Q
In which states do ionic compounds conduct electricity?Why?
A
molten and aqueous because the ions are free to move
5
Q
Which types of compounds have high melting and boiling points?
A
metals, ionic compounds and covalent network substances
6
Q
Do discrete covalent substances have high or low melting and boiling points?
A
low
7
Q
Are ionic compound soluble in water?
A
usually
8
Q
Are covalent substances soluble?
A
mostly - if they do not dissolve in a water they may dissolve in other things
