TOPIC C2 Flashcards
Which groups are most likely to form Ions
Groups 1,2 and 6, 7
What happens when a non-metal and a metal react together
The metal atoms loses electrons to form a positively charged ion and the non-metal gains these electrons to form a negatively charged ions
What is the attraction between the two electrostatic force
This is called ionic bond
What does the dot and cross diagrams show
It shows the arrangement of elements on an atom or ion
What is the Ionic compounds structure called
A giant ionic lattice
What are the properties of ionic bonding
They all have a high boiling and melting point(because of the strong bonds)
They compounds can’t conduct heat when they’re a solid
When the ionic compounds melt the ions are free to move they’ll carry electric current
How are covalent bonds formed
When non-metal atoms bond together, they share pairs of electrons to make covalent bonds
What does a covalent bond provide
It provides an extra shared electrons for each of them
Where does covalent bonding happen
In compounds is non-metals and in non-metal elements
What are the properties of simple molecular substances
Melting and boiling point are very low
Gas or liquid at a room temperature
They don’t conduct heat
How are the structure of the giant covalent all bonded together
By a strong covalent bond
Giant covalent have
A very highly melting and boiling point as lots of energy if needed to beak the covalent bonds between the atoms
What are the main examples of a giant covalent bond
Diamonds and graphite
What are the attraction that hold atoms together
In a regular structure and it’s called metallic bonding
Describe the structure of a diamond molecule
Each carbon atom forms four covalent bonds in a very rigid giant covalent structure
Describe the structure of a Graphite molecules
Each carbon atom forms three covalent bonds to create layers of hexagons. Each carbon atom also has one delocalised electron
Explain the structure of the silicon dioxide
Sometimes called silica this is what sand is made out of. Each grain of sand is one haunt structure of silicon and oxygen
Is diamond hard
Yes very hard
What is diamond made out of
A giant covalent structure,made up of carbon atoms that each form four covalent bond
What are Ions
They are charged particles- they can be single atoms or groups of atoms
What is the point of atoms trying to gain or lose electrons
to form ions, they are trying to do it to get a full putt shell like the nobles (stable electric structure)
Why so atoms need to have a full outer shell
Because if they have an outer shell they age her stable
What happens when metals form ions
They lose electrons from their outer shell to form their positive ions
What happens to non-metals when they for ions
They gain electrons into their outer shell to form negative ions
