Bonding, structure and properties of matter Flashcards
What are Polymers?`
Long chains of repeating units
What are all atoms in a polymer connected by?
Strong covalent bonds
Polymers are solid at room temperature because…?
They have stronger intermolecular forces than simple compounds so require more energy to break the bonds
What are fullerenes?
They are made of carbon and are in tubular shapes or hollow balls.
What are fullerenes made up from?
Carbon atoms arranged in pentagons, hexagons and heptagons.
What is the purpose of fullerenes?
To cage in atoms/molecules by trapping them in the empty space of the fullerenes
What practical uses in life are fullerenes used for?
Help hold the chemicals in drugs for people to take
They can be used for industrial purposes like acting like a catalyst due to their large surface area.
Great Lubricant
What are nanotubes made from?
Fullerenes
What are properties of nanotubes?
They are great heat and electricity conductors.
Not being able to be stretched to snap.
What are the uses for nanotubes?
They are used in technology in electricals
They are used in things like tennis rackets due to their light weight.
What three things that affect how fast a material changes state?
The type of material
The temperature
The pressure
What are the three types of particles?
Coarse
Fine
Nano
How do you calculate surface area to volume ratio?
Surface area/Volume
What are nanoparticles and why are they so useful?
Really really really really small particles (1nm-100nm) They can be used in medicine Electricity conductors Deodorants Sun cream to protect from UV
