Bonding Flashcards
What is an ionic bond?
An electrostatic force holding oppositely charged atoms together, between at least one metal and non metal (unless involving hydrogen)
What is transferred in an ionic bond?
Electrons
What is the result of an ionic bond in terms of electrons?
Atoms having full outer shells of electrons
Do ions have high or low melting and boiling points? Why?
High melting points because they have strong electrostatic bonds that require lots of energy to break
What are intermolecular forces?
The forces holding separate atoms, compounds or molecules together
What are intramolecular forces?
The forces holding atoms that make up a molecule or compound together
What are ionic, covalent and metallic bonds examples of?
Intermolecular bonds
When can ions conduct electricity? Why?
Ions only conduct electricity when they are not solid, since the ions can move more.
Are ionic compounds soluble in water?
Yes
What is a covalent bond?
The electrostatic force between a positive nucleus and a bonding pair of electrons
What is the valence shell?
The outer shell
What happens to electrons in a covalent bond?
They are shared between atoms to form full outer shells
Do simple covalent compounds have high or low melting and boiling points? Why?
Low melting points because they have weak intermolecular forces that require little energy to break
Do covalent compounds dissolve in water?
No
What is diamond made from?
Carbon
What is graphite made from?
Carbon
What is buckminsterfullerene made from?
Carbon
Do diamonds conduct electricity? Why?
No since it has no delocalised electrons
Does graphite conduct electricity? Why?
Yes, since it has delocalised (free) electrons
Does buckminsterfullerene conduct electricity? Why?
Yes, since it has delocalised (free) electrons