Bonding Structure And Properties Of Matter

Question 1

Properties of ionic compounds

Answer 1

Giant ionic lattice
The ions form closely packed reular lattice arrangement and very strong electrostatic forces of attraction between oppositely charged ions in all directions

Question 2

Similar properties of all ionic compounds

Answer 2

High melting points and high boiling points due to many strong bonds
When solid they can’t conduct electricity
When ionic compounds melt ions are free to move it’ll carry electric charge
Some dissolve easily in water
Ions superstar and all free to move so solutions I’ll carry electric charge

Question 3

Properties of simple molecular compounds

Answer 3

Atoms within molecules are held together by very strong coblavent bond however forces of attract between molecules are very weak
Meeting boiling points are low due to molecules being easily parted from each other
Gasses and liquids at room temp
Don’t conduct electricity due to no free ion or electrons

Question 4

What is a polymer

Answer 4

A long chain of repeating units

Question 5

Properties of polymers

Answer 5

Lots of small units lined together to form long molecules that has repeating sections joined by strong covalent bonds
Intermolecular forces are larger than simple covalent molecules so more energy is needed to break them
Have low boiling pound than ionic or giant molecular conpounds

Question 6

Properties of giant covenants structure

Answer 6

Are macromolecules
High melting and boiling points
Don’t contain charged particles so don’t conduct electricity

Question 7

What is aDiamond covealnt sturcute

Answer 7

Each carbon atoms forms four covalent bonds in a very rigid giant covalent structure

Question 8

Properties of graphite

Answer 8

Each carbon atom forms three covalent bonds to create layers of hexagons
Each carbon atom has one delocalised electron m

Question 9

Properties of silicon dioxide

Answer 9

Somtiems called sillica thsi is what sand is made from
Each grain is one giant covalent structure of silk icon and oxygen

Question 10

Facts of diamond

Answer 10

Strong covealnt bonds very high melting point
Dosnt conduct electricity no free lecterns

Question 11

Facts of graphite

Answer 11

Sheets of carbon atoms arranged in hexagons
No covantlent bonds between layers only held together weakly makes graphite soft and slippery
Got high melting point
Each carbon has 1 delocised electron making it able to conduct electricity

Question 12

What metallic bonding involve

Answer 12

Delocalised electrons
Metals consist of a giant structure
Electrons in outter shell of metal atoms are delocalised electrons
Strong electrostatic attraction between positive metal atoms and shared negative electrons
These forces of attraction hold the atom together Ina regular strict and is called metallic bonding
Very strong

Question 13

Why are metals good conductors or heat and electricity

Answer 13

Delocalised electrons carry electrical charge and thermal heat throughout whole structure
So they’re goo conductors if heart and electricity

Question 14

Why are metals malleable

Answer 14

Layers of metals can slide over each other

Question 15

Why are alloys hard

Answer 15

A mixture of two or more metals or metal and another element
Hard due to different sized atoms distorting the layers of metal atoms making it harder for them to slide over each other

Question 16

The whole cycle of substance changes
Solid to liquid to gas

Answer 16

When solid heated,particles gain energy
Makes them vibrate,which weakens forces that hold together
At melting point particles have enough energy to break free from positions(melting)
When liquid is heated again particles gain more energy
Energy makes particles move faster,weakens and breaks bonds holding them together
At boiling point particles have enough energy to break bonds

Question 17

The whole state of matter cycle
Gas to liquid to solid

Answer 17

As gas cools particles don’t have enuf energy to overcome forces of attraction between them
Bonds form between them
At boiling point so many bonds have formed between the gas particles that gas becomes liquid
As liquid cools particles have less energy so move less
Not enough energy to overcome attraction so more bonds form
At melting point so many bonds form holding particles in place (freezing)

Question 18

What are the state symbols

Answer 18

S)-solid
l)-liquid
g)-gas
aq)-aqueous