Properties Of Simple Molecular Substances & Giant Covalent Structures Flashcards
What type of bonds do non-metals form ?
Covalent bonds
What are intermolecular forces
Weak forces that exist between molecules
Complete the sentence :
The more intermolecular forces a molecule has the ———————— ——— ——————————.
Stronger the attraction.
Do simple molecular substances have high melting points & boiling points or low melting points and boiling points ?
Low melting points & boiling points.
Complete the sentence :
The bigger the simple molecular substances ——— ———— —————— ———————— —— ————— .
The more energy required to break.
What happens to the melting points and boiling points as you go down the groups ?
It gets higher.
What happens to electrons in covalent bonds ?
Electrons are shared.
Do simple molecular structures conduct electricity ? Why ?
No.
There are no free moving electrons and they have no electrical charge.
What are giant covalent structures made of ?
Huge numbers of non-metal atoms.
Complete the sentence :
Giant covalent structures have regular ————————— ————————.
Repeating lattices.
Do giant covalent structures have high melting points and high boiling points or low melting points and low boiling points ?
Low melting points and boiling points.
Do giant covalent structures conduct electricity ? ( what is the exception ? )
No, even when molten .
Graphite (made of carbon atoms)
What are simple molecular substances ?
Small molecules that are made up of a few covalently bonded atoms.
(By weak intermolecular forces)
(NEW TOPIC)
What are allotropes ?
Different structural forms of the same element in the same physical state.
What is the maximum number of bonds Carbon can make ?
4
Complete the sentence :
Each polymer molecule is made up of smaller units, called ————————.
Monomers.
Complete the sentence :
Giant covalent structures have regular ————————— ————————.
Repeating lattices
