Covalent Bonding
What are covalent bonds between?
Covalent bonds are between two non-metals.
What are the covalent bonds
The covalent bonds are between the positivly charged nuclei (protons) are attracted to the negitivly charged shared protons.
What are the diatomic elements
H² -Have
N²-No
F²-Fear
O²-Of
I²-Ice
Cl²-Cold
Br²-Beer
What is the displayed formula for chloromethane
.....H
......|
H—C—H
......|
....Cl
What is the displayed formula for ammonia?
.....H
......|
H—N—H
What is the displayed formula for any diatomic molecule?
X=X
What is the displayrd formula for a halide?
H—X
What are the 7 properties of simple molecular substances?
Most are two of the same molecule
Most are gas or liquid at room temperature
Strong covalent bonds and weak intermolecular forces
Low boiling point
Low melting point
Does not conduct electricity
The higher the molecular mass(Mr) the higher the melting and boiling point. The stronger intermolecular forces requited more energy to break.
Is water ionic or covalent?
Water is covalent
How many carbon atoms is fullerene made up of?
Fullerene is made up of 60 carbon atoms.
What state is fullerene at room temperature
Fullerene is a soft solid at room temperature
In fullerene how many carbons are bonded to each one?
In fullerene each carbon bonds to three others, so there is one delocalised electron.
Are diomonds covalent or ionic
Diamonds are covalent
What are the 8 properties for diomond?
Made from carbon
Rigid lattice structure
Covalent bond
Each carbon atoms is bonded to 4 others
High melting point
Not electrically conductive
Good thermal conductors
The carbon atoms have a full out3r shell so it takes alot of energy to break them.
what are the 5 properties properties for graphite?
1. is made of carbon. Each carbon atom bonds with 3
others.
2. is made of 2D sheets of hexagons In which each atom ha:
one unpaired electron left over (that's free/ delocalised)
The sheets are free to slide over each other. This makes
graphite soft and slippery.
3. will conduct electricity because of these free electrons.
4. is made of sheets. One sheet is called graphene.
5. has a high melting point
Is graphite a simple molecular substance or a giant covalent substance?
Graphite is a giant covalent sunstance