Chemistry 2 ionic and covalent bonding

Question 1

What is an ion

Answer 1

When an atom loses or gains electrons
Eg a sodium atom would turn to sodium ion +

Question 2

How are they bonded

Answer 2

Attracted by electrostatic forces

Question 3

What is an ionic lattice

Answer 3

Attraction between metal and non metal
In a alternating lattice structure positive surrounded by negative

Question 4

What are the properties

Answer 4

They have high melting point and boiling point due to strong forces of attraction
If they are in solid it will not conduct electricity as they are not free to move around

Question 5

What is covalent bonds

Answer 5

Eg between 2 chlorine both need one more electron to complete
Therefore they share electrons

Question 6

What are examples of giant covalent bonds and there properties

Answer 6

Diamond mad graphite
There structure repeats over and over
They are very strong and have high melting and boiling points
Don’t conduct electricity even when molten except graphite
MAde of carbon atoms

Question 7

What is a molecular compound

Answer 7

Non metal and non metal which makes covalent bonds

Question 8

What is an allotrope

Answer 8

Diff entry structural forms of the same element in the same physical state

Question 9

Carbon is an example of a allotrope for carbon explain

Answer 9

Makes 4 Each carbon atom is covalently bonded forms a 3d pattern takes lots of energy to break them

Question 10

Example of graphite

Answer 10

It’s bonded by 3 carbon atoms
Arranged on top of it each other
Meaning they are free to slide over and there are not bonds between the spare electron is delocalised and can move freely generate heat