2- Structure And Bonding Flashcards
When are ions formed
When atoms gain or lose electrons
What are group one called
Alkali metals
Are electrons transferred or shared in ionic bonds
Transferred
What is the formula for an ammonium ion
NH4+
Are ionic bonds strong or weak
Very strong
What do lots of ionic compounds form
Regular lattice structures
What are the properties of ionic compounds
High melting and boiling point
Can conduct electricity when melted or dissolved in water
Why do ionic compounds have a high melting and boiling point
Lots of strong ionic bonds
Require lots of energy (a high temp) to overcome
Why do ionic compounds have to be melted or in solution to conduct
So that the ions are free to move and carry charge
What is the formula of a hydroxide ion
OH-
What is the formula for a sulphate ion
SO42-
What is the formula of a nitrate ion
NO3-
What is the formula for a carbonate ion
CO32-
What is electrostatic force
The force of attraction between two oppositely charged particles
What is a covalent bond
The bond between two non metals
In covalently bonding are electrons transferred or shared
Shared
What is a bad thing about displayed formula
They dont show you the 3D shape of the molecule
What is a smal molecule
A molecule where the atoms are joined by strong covalent bonds
Polymers
Can be shown as a displayed formula
Weak intermolecular forces
What are intermolecular forces
The forces between molecules
(Not atoms)
What is the formula for methane
CH4
